Unable to debug blazor webassembly

[ermshiperete]

Issue Description

I'm not able to debug any blazor webassembly project.

(see also vscode#123018)

Steps to Reproduce

I created a new project with dotnet new blazorwasm -o proj, opened the project in vscode and "launch and debug" with F5.

The first time I start it, the browser launches with an empty window, and after a while I get an error message box in VSCode: Unable to launch browser: "Invalid URL: undefined/devtools/browser/a3da5d99-0f37-4dc0-b62e-4a1045057da9".

If I close the browser window and try to start again, I get a notification in vscode: It looks like a browser is already running from an old debug session. Please close it before trying to debug, otherwise VS Code may not be able to connect to it., and the VSCode Debug Console shows:

A fatal error was encountered. The library 'libhostpolicy.so' required to execute the application was not
found in '/usr/share/dotnet/shared/Microsoft.AspNetCore.App/5.0.5'.
The program '[15627] dotnet' has exited with code 0 (0x0).

After that I always get this error, even after closing vscode, closing all browsers, killing all processes related to Chrom*, dotnet, node.

I tried with different settings, different browsers, removing all extensions except the ones necessary for debugging webasm, rebooting etc, but I'm not able to get debugging to work. Debugging in Chrome works though. I was able to debug in VSCode immediately after Build conference last year, but never since.

Same thing happens with the Insider version of vscode.

This is on Ubuntu 18.04.

Logs

OmniSharp log

Starting OmniSharp server at 5/6/2021, 8:45:36 PM Target: /tmp/proj

OmniSharp server started.
Path: /home/eberhard/.vscode/extensions/ms-dotnettools.csharp-1.23.11/.omnisharp/1.37.8/run
PID: 8344

Starting OmniSharp on ubuntu 18.4 (x64)
info: OmniSharp.Services.DotNetCliService
DotNetPath set to dotnet
info: OmniSharp.MSBuild.Discovery.MSBuildLocator
Located 1 MSBuild instance(s)
1: StandAlone 16.9.0 - "/home/eberhard/.vscode/extensions/ms-dotnettools.csharp-1.23.11/.omnisharp/1.37.8/omnisharp/.msbuild/Current/Bin"
info: OmniSharp.MSBuild.Discovery.MSBuildLocator
MSBUILD_EXE_PATH environment variable set to '/home/eberhard/.vscode/extensions/ms-dotnettools.csharp-1.23.11/.omnisharp/1.37.8/omnisharp/.msbuild/Current/Bin/MSBuild.exe'
info: OmniSharp.MSBuild.Discovery.MSBuildLocator
Registered MSBuild instance: StandAlone 16.9.0 - "/home/eberhard/.vscode/extensions/ms-dotnettools.csharp-1.23.11/.omnisharp/1.37.8/omnisharp/.msbuild/Current/Bin"
CscToolExe = csc.exe
MSBuildToolsPath = /home/eberhard/.vscode/extensions/ms-dotnettools.csharp-1.23.11/.omnisharp/1.37.8/omnisharp/.msbuild/Current/Bin
CscToolPath = /home/eberhard/.vscode/extensions/ms-dotnettools.csharp-1.23.11/.omnisharp/1.37.8/omnisharp/.msbuild/Current/Bin/Roslyn
BypassFrameworkInstallChecks = true
MSBuildExtensionsPath = /home/eberhard/.vscode/extensions/ms-dotnettools.csharp-1.23.11/.omnisharp/1.37.8/omnisharp/.msbuild
info: OmniSharp.WorkspaceInitializer
Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.CSharpFormattingWorkspaceOptionsProvider, Order: 0
info: OmniSharp.WorkspaceInitializer
Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.Completion.CompletionOptionsProvider, Order: 0
info: OmniSharp.WorkspaceInitializer
Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.RenameWorkspaceOptionsProvider, Order: 100
info: OmniSharp.WorkspaceInitializer
Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.ImplementTypeWorkspaceOptionsProvider, Order: 110
info: OmniSharp.WorkspaceInitializer
Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.BlockStructureWorkspaceOptionsProvider, Order: 140
info: OmniSharp.Cake.CakeProjectSystem
Detecting Cake files in '/tmp/proj'.
info: OmniSharp.Cake.CakeProjectSystem
Could not find any Cake files
info: OmniSharp.MSBuild.ProjectSystem
No solution files found in '/tmp/proj'
info: OmniSharp.MSBuild.ProjectManager
Queue project update for '/tmp/proj/proj.csproj'
info: OmniSharp.Script.ScriptProjectSystem
Detecting CSX files in '/tmp/proj'.
info: OmniSharp.Script.ScriptProjectSystem
Could not find any CSX files
info: OmniSharp.WorkspaceInitializer
Configuration finished.
info: OmniSharp.Stdio.Host
Omnisharp server running using Stdio at location '/tmp/proj' on host 7901.
info: OmniSharp.MSBuild.ProjectManager
Loading project: /tmp/proj/proj.csproj
info: OmniSharp.MSBuild.ProjectManager
Successfully loaded project file '/tmp/proj/proj.csproj'.
info: OmniSharp.MSBuild.ProjectManager
Adding project '/tmp/proj/proj.csproj'
info: OmniSharp.MSBuild.ProjectManager
Update project: proj
info: OmniSharp.Roslyn.CSharp.Services.Diagnostics.CSharpDiagnosticWorkerWithAnalyzers
Solution initialized -> queue all documents for code analysis. Initial document count: 10.

C# log

Post the output from Output-->C# here: nothing

Output of Debug Console

Full output of Debug Console (after starting debugger the second time)

-------------------------------------------------------------------
You may only use the Microsoft .NET Core Debugger (vsdbg) with
Visual Studio Code, Visual Studio or Visual Studio for Mac software
to help you develop and test your applications.
-------------------------------------------------------------------
Using launch settings from '/tmp/proj/Properties/launchSettings.json' [Profile 'proj']...
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Private.CoreLib.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/dotnet.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Runtime.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Diagnostics.Process.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.ComponentModel.Primitives.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/Microsoft.Win32.Primitives.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Text.Encoding.Extensions.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Threading.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.IO.FileSystem.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Memory.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/Microsoft.DotNet.Cli.Utils.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Runtime.InteropServices.RuntimeInformation.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Runtime.Loader.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Diagnostics.Tracing.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Text.Encoding.CodePages.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Collections.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Collections.Concurrent.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/Microsoft.DotNet.InternalAbstractions.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Linq.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/Microsoft.DotNet.Configurer.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/Microsoft.DotNet.Cli.CommandLine.dll'.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Runtime.InteropServices.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Console.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/NuGet.Versioning.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/Microsoft.AspNetCore.DeveloperCertificates.XPlat.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Security.Cryptography.X509Certificates.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Collections.NonGeneric.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Formats.Asn1.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Runtime.Numerics.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Security.Cryptography.Primitives.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Security.Cryptography.Algorithms.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Security.Cryptography.OpenSsl.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Security.Cryptography.Encoding.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Diagnostics.StackTrace.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Threading.Thread.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Reflection.Metadata.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Collections.Immutable.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/Microsoft.ApplicationInsights.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/netstandard.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Private.Uri.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Private.Xml.Linq.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/Microsoft.TemplateEngine.Cli.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/Microsoft.Extensions.DependencyModel.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Private.Xml.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Text.Json.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Text.RegularExpressions.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/Microsoft.TemplateEngine.Utils.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Runtime.CompilerServices.Unsafe.dll'. Module was built without symbols.
Loaded '/usr/share/dotnet/sdk/5.0.202/NuGet.ProjectModel.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/NuGet.Common.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.IO.Compression.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Net.Http.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Net.Primitives.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Diagnostics.DiagnosticSource.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Net.Security.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Net.Requests.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Net.NetworkInformation.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/Microsoft.Build.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Net.Sockets.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/Microsoft.Build.Framework.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.ObjectModel.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Threading.Tasks.Dataflow.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/Microsoft.NET.Sdk.WorkloadMSBuildSdkResolver.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/Microsoft.Build.NuGetSdkResolver.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Diagnostics.FileVersionInfo.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.IO.MemoryMappedFiles.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/Microsoft.NET.Sdk.WorkloadManifestReader.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Threading.Tasks.Parallel.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/NuGet.Frameworks.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/Microsoft.Build.Utilities.Core.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Net.NameResolution.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/Microsoft.TemplateEngine.Abstractions.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/Microsoft.TemplateEngine.Orchestrator.RunnableProjects.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/Microsoft.TemplateSearch.Common.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/Microsoft.TemplateEngine.Edge.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/Microsoft.DotNet.TemplateLocator.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Reflection.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/Microsoft.DotNet.SdkResolver.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Reflection.Extensions.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Xml.XDocument.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/Newtonsoft.Json.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Linq.Expressions.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Xml.ReaderWriter.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.ComponentModel.TypeConverter.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/Microsoft.TemplateEngine.Core.Contracts.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/Microsoft.TemplateEngine.Core.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Runtime.Serialization.Formatters.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Diagnostics.TraceSource.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Threading.Tasks.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Runtime.Serialization.Primitives.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Collections.Specialized.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Data.Common.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.ComponentModel.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Numerics.Vectors.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Reflection.Emit.ILGeneration.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Reflection.Emit.Lightweight.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Reflection.Primitives.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Runtime.Extensions.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Globalization.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Diagnostics.Tools.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Diagnostics.Debug.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.IO.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Application Insights Telemetry: {"name":"Microsoft.ApplicationInsights.74cc1c9e3e6e4d05b3fcdde9101d0254.Event","time":"2021-05-05T19:16:01.7686180Z","iKey":"74cc1c9e-3e6e-4d05-b3fc-dde9101d0254","tags":{"ai.session.id":"f43579e7-2aa6-4521-ac6c-a29b6666b798","ai.device.osVersion":"ubuntu","ai.internal.sdkVersion":"2.0.0.30671"},"data":{"baseType":"EventData","baseData":{"ver":2,"name":"dotnet/cli/toplevelparser/command","measurements":{"Startup Time":1227.1257},"properties":{"OS Version":"18.04","OS Platform":"Linux","Output Redirected":"True","Runtime Id":"ubuntu.18.04-x64","Product Version":"5.0.202","Docker Container":"False","Current Path Hash":"29ccbcbce9441d720964b7875e45116ed5bf4cc853e454c8aedf299c0f856f93","Machine ID Old":"b85e29770457c8959f62c912224207a8265b8278ccb088f74c21f3cb8eee69dc","Machine ID":"e4bb8530670504ac99f7f051c446167ba6bff93c901c4c2b5653a522c0b6c5a6","Kernel Version":"Linux 5.4.0-72-generic #80~18.04.1-Ubuntu SMP Mon Apr 12 23:26:25 UTC 2021","Libc Release":"stable","Libc Version":"2.27","verb":"ddeaded8ad8e44933f39e672a8886d49ba10738d78bde119b2fe7c3c25fdc4d4","event id":"67ed8f8c-4d18-4a50-8f01-fc5bb92e7f0e"}}}}
Building...
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Text.Encoding.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Threading.ThreadPool.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/5.0.5/System.Resources.ResourceManager.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/Microsoft.NET.Sdk.WorkloadMSBuildSdkResolver.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/Microsoft.Build.NuGetSdkResolver.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/Microsoft.NET.Sdk.WorkloadManifestReader.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/sdk/5.0.202/NuGet.Frameworks.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Cannot use file stream for [/usr/share/dotnet/shared/Microsoft.AspNetCore.App/5.0.5/Microsoft.AspNetCore.App.deps.json]: No such file or directory
A fatal error was encountered. The library 'libhostpolicy.so' required to execute the application was not found in '/usr/share/dotnet/shared/Microsoft.AspNetCore.App/5.0.5'.
The program '[15627] dotnet' has exited with code 0 (0x0).

Environment information

VSCode version: 1.55.2
C# Extension: 1.23.11

Mono Information

OmniSharp using built-in mono

Dotnet Information

.NET SDK (reflecting any global.json): Version: 5.0.202 Commit: db7cc87d51

Runtime Environment:
OS Name: ubuntu
OS Version: 18.04
OS Platform: Linux
RID: ubuntu.18.04-x64
Base Path: /usr/share/dotnet/sdk/5.0.202/

Host (useful for support):
Version: 5.0.5
Commit: 2f740adc14

.NET SDKs installed:
2.2.402 [/usr/share/dotnet/sdk]
3.0.103 [/usr/share/dotnet/sdk]
3.1.201 [/usr/share/dotnet/sdk]
3.1.408 [/usr/share/dotnet/sdk]
5.0.202 [/usr/share/dotnet/sdk]

.NET runtimes installed:
Microsoft.AspNetCore.All 2.2.8 [/usr/share/dotnet/shared/Microsoft.AspNetCore.All]
Microsoft.AspNetCore.App 2.2.8 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 3.0.3 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 3.1.14 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 5.0.5 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.NETCore.App 2.2.8 [/usr/share/dotnet/shared/Microsoft.NETCore.App]
Microsoft.NETCore.App 3.0.3 [/usr/share/dotnet/shared/Microsoft.NETCore.App]
Microsoft.NETCore.App 3.1.14 [/usr/share/dotnet/shared/Microsoft.NETCore.App]
Microsoft.NETCore.App 5.0.5 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

To install additional .NET runtimes or SDKs:
https://aka.ms/dotnet-download

Visual Studio Code Extensions

Extension	Author	Version
algorithm-mnemonics-vscode	davidbroetje	1.0.3
Angular-BeastCode	Mikael	10.0.3
angular-schematics	cyrilletuzi	4.13.0
Angular2	johnpapa	11.0.0
awesometypescriptproblemmatcher	JuanCasanova	0.3.0
azure-account	ms-vscode	0.9.8
blazorwasm-companion	ms-dotnettools	1.0.1
cake-vscode	cake-build	1.0.0
classynaming	reflectiondm	1.2.0
cmake	twxs	0.0.17
cmake-tools	ms-vscode	1.7.1
code-gnu-global	austin	0.2.2
code-groovy	marlon407	0.1.2
code-runner	formulahendry	0.11.3
code-settings-sync	Shan	3.4.3
CppSnippets	hars	0.0.15
cpptools	ms-vscode	1.3.1
csharp	ms-dotnettools	1.23.11
csharpextensions	jchannon	1.3.1
debug	webfreak	0.25.0
debugger-for-edge	msjsdiag	1.0.15
docomment	k--kato	0.1.20
EditorConfig	EditorConfig	0.16.4
gi	rubbersheep	0.2.11
githistory	donjayamanne	0.6.16
gitignore	codezombiech	0.6.0
gitlens	eamodio	11.4.1
gradle-language	naco-siren	0.2.3
hexeditor	ms-vscode	1.6.0
import-sorter	mike-co	3.3.1
java	redhat	0.79.1
jupyter	ms-toolsai	2021.5.745244803
MagicPython	magicstack	1.1.0
meson	asabil	1.3.0
mono-debug	ms-vscode	0.16.2
mssql	ms-mssql	1.10.1
numbered-bookmarks	alefragnani	8.0.3
openapi-preview	zoellner	1.7.1
php-debug	felixfbecker	1.15.0
php-intellisense	felixfbecker	2.3.14
php-pack	felixfbecker	1.0.2
phpserver	brapifra	3.0.2
powershell	ms-vscode	2021.2.2
prettier-vscode	esbenp	6.3.2
project-manager	alefragnani	12.1.0
python	ms-python	2021.4.765268190
qub-msbuild	qub	0.6.3
qub-xml-vscode	qub	1.2.8
remote-containers	ms-vscode-remote	0.166.1
remote-ssh	ms-vscode-remote	0.65.4
remote-ssh-edit	ms-vscode-remote	0.65.4
remote-wsl	ms-vscode-remote	0.54.6
terminal-manager	saurabh	1.0.6
vs-keybindings	ms-vscode	0.2.1
vsc-python-indent	KevinRose	1.14.2
vsc-rustfmt	Connorcpu	0.1.0
vscode-angular2-files	alexiv	1.6.4
vscode-coverage-gutters	ryanluker	2.7.3
vscode-crowdin	Crowdin	1.1.1
vscode-docker	ms-azuretools	1.12.1
vscode-dotnet-runtime	ms-dotnettools	1.0.0
vscode-edge-devtools	ms-edgedevtools	1.1.8
vscode-eslint	dbaeumer	2.1.20
vscode-fileheader	mikey	0.0.2
vscode-firefox-debug	firefox-devtools	2.9.4
vscode-intelephense-client	bmewburn	1.7.1
vscode-java-debug	vscjava	0.33.1
vscode-jest	Orta	3.2.0
vscode-lldb	vadimcn	1.6.3
vscode-markdownlint	DavidAnson	0.40.4
vscode-openapi	42Crunch	4.5.1
vscode-pull-request-github	GitHub	0.25.1
vscode-pylance	ms-python	2021.5.0
vscode-python-test-adapter	littlefoxteam	0.6.8
vscode-remote-extensionpack	ms-vscode-remote	0.20.0
vscode-test-explorer	hbenl	2.19.6
vscode-typescript-tslint-plugin	ms-vscode	1.3.3
vscode-yaml	redhat	0.18.0
vscodeintellicode	VisualStudioExptTeam	1.2.12
vsliveshare	ms-vsliveshare	1.0.4131
vsliveshare-audio	ms-vsliveshare	0.1.91
vsliveshare-pack	ms-vsliveshare	0.4.0
xml	DotJoshJohnson	2.5.1
xml-format	mikeburgh	1.1.2

[gregg-miskelly]

CC @captainsafia

[captainsafia]

It looks like you're running into a dupe of dotnet/aspnetcore#31653.

@gregg-miskelly Feel free to close this issue.