Project does not run.

[jcowin-sigmadzn]

Steps to Reproduce.

1. Download zip file of code.
2. Extract code.
3. Open solution file in Visual Studio 2022
4. Click run "IIS Express"
5. This error pops up.

OS: Windows 10.

System.Text.Json.JsonException
HResult=0x80131500
Message='<' is an invalid start of a value. Path: $ | LineNumber: 0 | BytePositionInLine: 0.
Source=System.Text.Json
StackTrace:
at System.Text.Json.ThrowHelper.ReThrowWithPath(ReadStack& state, JsonReaderException ex) in System.Text.Json\ThrowHelper.cs:line 910
at System.Text.Json.Serialization.JsonConverter1.ReadCore(Utf8JsonReader& reader, JsonSerializerOptions options, ReadStack& state) in System.Text.Json.Serialization\JsonConverter.cs:line 186 at System.Text.Json.JsonSerializer.ReadCore[TValue](JsonConverter jsonConverter, Utf8JsonReader& reader, JsonSerializerOptions options, ReadStack& state) in System.Text.Json\JsonSerializer.cs:line 770 at System.Text.Json.JsonSerializer.ReadCore[TValue](JsonReaderState& readerState, Boolean isFinalBlock, ReadOnlySpan1 buffer, JsonSerializerOptions options, ReadStack& state, JsonConverter converterBase) in System.Text.Json\JsonSerializer.cs:line 1127
at System.Text.Json.JsonSerializer.ContinueDeserialize[TValue](ReadBufferState& bufferState, JsonReaderState& jsonReaderState, ReadStack& readStack, JsonConverter converter, JsonSerializerOptions options) in System.Text.Json\JsonSerializer.cs:line 1092
at System.Text.Json.JsonSerializer.ReadAll[TValue](Stream utf8Json, JsonTypeInfo jsonTypeInfo) in System.Text.Json\JsonSerializer.cs:line 1033
at System.Text.Json.JsonSerializer.ReadAllUsingOptions[TValue](Stream utf8Json, Type returnType, JsonSerializerOptions options) in System.Text.Json\JsonSerializer.cs:line 1120
at System.Text.Json.JsonSerializer.Deserialize[TValue](Stream utf8Json, JsonSerializerOptions options) in System.Text.Json\JsonSerializer.cs:line 847
at Microsoft.AspNetCore.Hosting.StaticWebAssets.StaticWebAssetsLoader.UseStaticWebAssetsCore(IWebHostEnvironment environment, Stream manifest)
at Microsoft.AspNetCore.Hosting.StaticWebAssets.StaticWebAssetsLoader.UseStaticWebAssets(IWebHostEnvironment environment, IConfiguration configuration)
at Microsoft.AspNetCore.WebHost.<>c.b__9_0(WebHostBuilderContext ctx, IConfigurationBuilder cb)
at Microsoft.AspNetCore.Hosting.GenericWebHostBuilder.<>c__DisplayClass9_0.b__0(HostBuilderContext context, IConfigurationBuilder builder)
at Microsoft.Extensions.Hosting.HostBuilder.BuildAppConfiguration()
at Microsoft.Extensions.Hosting.HostBuilder.Build()
at Microsoft.AspNetCore.Components.Web.DevServer.Commands.ServeCommand.Execute() in Microsoft.AspNetCore.Components.Web.DevServer.Commands\ServeCommand.cs:line 23
at Microsoft.Extensions.CommandLineUtils.CommandLineApplication.Execute(String[] args) in Microsoft.Extensions.CommandLineUtils\CommandLineApplication.cs:line 382
at Microsoft.AspNetCore.Components.WebAssembly.DevServer.Program.Main(String[] args) in Microsoft.AspNetCore.Components.WebAssembly.DevServer\Program.cs:line 22

This exception was originally thrown at this call stack:
System.Text.Json.ThrowHelper.ThrowJsonReaderException(ref System.Text.Json.Utf8JsonReader, System.Text.Json.ExceptionResource, byte, System.ReadOnlySpan) in ThrowHelper.cs
System.Text.Json.Utf8JsonReader.ConsumeValue(byte) in Utf8JsonReader.cs
System.Text.Json.Utf8JsonReader.ReadFirstToken(byte) in Utf8JsonReader.cs
System.Text.Json.Utf8JsonReader.ReadSingleSegment() in Utf8JsonReader.cs
System.Text.Json.Utf8JsonReader.Read() in Utf8JsonReader.cs
System.Text.Json.Serialization.JsonConverter.ReadCore(ref System.Text.Json.Utf8JsonReader, System.Text.Json.JsonSerializerOptions, ref System.Text.Json.ReadStack) in JsonConverter.cs

Inner Exception 1:
JsonReaderException: '<' is an invalid start of a value. LineNumber: 0 | BytePositionInLine: 0.

[jcowin-sigmadzn]

Note: If I create a new "Blazor Server Project" and copy over the index and tooltip code. It runs just as expected.