MissingMethodException: Method not found: '!!0 AutoMapper.IMapper.Map(System.Object)'.

[ghost]

We can only help you if you are on the latest version. Either use the latest 3.x or 4.x
I using last version of IdentityServer 4

Issue / Steps to reproduce the problem

• Creating a new blazor webassembly app
• I scaffolded all the Identities files and customized
• and custom ApiAuthorizationDbContext for blazor webassembly
• Install Automapper v10 and AutoMapper.Extensions.Microsoft.DependencyIn v8.0.1
  note: I using Blazor Webassembly Individual user account with default Authentication

when I run project, in-browser give me 500 error :

AuthenticationService.js:44 GET https://localhost:5001/connect/authorize?client_id=Web.Client&redirect_uri=https%3A%2F%2Flocalhost%3A5001%2Fauthentication%2Flogin-callback&response_type=code&scope=Web.ServerAPI%20openid%20profile&state=4b9b0120a48442a786b5bc8260c52f65&code_challenge=ViBkoIwumlfy_kg_y0bAh9uFsEByt2aKDOVUSREfARE&code_challenge_method=S256&prompt=none&response_mode=query 500

and in self-host console:

crit: IdentityServer4.Hosting.IdentityServerMiddleware[0]
      Unhandled exception: Method not found: '!!0 AutoMapper.IMapper.Map(System.Object)'.
System.MissingMethodException: Method not found: '!!0 AutoMapper.IMapper.Map(System.Object)'.
   at IdentityServer4.EntityFramework.Mappers.PersistedGrantMappers.ToEntity(PersistedGrant model)
   at IdentityServer4.EntityFramework.Stores.PersistedGrantStore.StoreAsync(PersistedGrant token)
   at IdentityServer4.Stores.DefaultGrantStore`1.StoreItemAsync(String key, T item, String clientId, String subjectId, DateTime created, Nullable`1 expiration)
   at IdentityServer4.Stores.DefaultGrantStore`1.CreateItemAsync(T item, String clientId, String subjectId, DateTime created, Int32 lifetime)
   at IdentityServer4.ResponseHandling.AuthorizeResponseGenerator.CreateCodeFlowResponseAsync(ValidatedAuthorizeRequest request)
   at IdentityServer4.ResponseHandling.AuthorizeResponseGenerator.CreateResponseAsync(ValidatedAuthorizeRequest request)
   at IdentityServer4.Endpoints.AuthorizeEndpointBase.ProcessAuthorizeRequestAsync(NameValueCollection parameters, ClaimsPrincipal user, ConsentResponse consent)
   at IdentityServer4.Endpoints.AuthorizeEndpoint.ProcessAsync(HttpContext context)
   at IdentityServer4.Hosting.IdentityServerMiddleware.Invoke(HttpContext context, IEndpointRouter router, IUserSession session, IEventService events)
fail: Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware[1]
      An unhandled exception has occurred while executing the request.
System.MissingMethodException: Method not found: '!!0 AutoMapper.IMapper.Map(System.Object)'.
   at IdentityServer4.EntityFramework.Mappers.PersistedGrantMappers.ToEntity(PersistedGrant model)
   at IdentityServer4.EntityFramework.Stores.PersistedGrantStore.StoreAsync(PersistedGrant token)
   at IdentityServer4.Stores.DefaultGrantStore`1.StoreItemAsync(String key, T item, String clientId, String subjectId, DateTime created, Nullable`1 expiration)
   at IdentityServer4.Stores.DefaultGrantStore`1.CreateItemAsync(T item, String clientId, String subjectId, DateTime created, Int32 lifetime)
   at IdentityServer4.ResponseHandling.AuthorizeResponseGenerator.CreateCodeFlowResponseAsync(ValidatedAuthorizeRequest request)
   at IdentityServer4.ResponseHandling.AuthorizeResponseGenerator.CreateResponseAsync(ValidatedAuthorizeRequest request)
   at IdentityServer4.Endpoints.AuthorizeEndpointBase.ProcessAuthorizeRequestAsync(NameValueCollection parameters, ClaimsPrincipal user, ConsentResponse consent)
   at IdentityServer4.Endpoints.AuthorizeEndpoint.ProcessAsync(HttpContext context)
   at IdentityServer4.Hosting.IdentityServerMiddleware.Invoke(HttpContext context, IEndpointRouter router, IUserSession session, IEventService events)
   at IdentityServer4.Hosting.IdentityServerMiddleware.Invoke(HttpContext context, IEndpointRouter router, IUserSession session, IEventService events)
   at IdentityServer4.Hosting.MutualTlsTokenEndpointMiddleware.Invoke(HttpContext context, IAuthenticationSchemeProvider schemes)
   at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)
   at IdentityServer4.Hosting.BaseUrlMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Builder.Extensions.MapWhenMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Builder.Extensions.MapMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore.MigrationsEndPointMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore.DatabaseErrorPageMiddleware.Invoke(HttpContext httpContext)
   at Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore.DatabaseErrorPageMiddleware.Invoke(HttpContext httpContext)
   at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)

and in https://localhost:5001/connect/authorize?client_id=Web.Client&redirect_uri=https%3A%2F%2Flocalhost%3A5001%2Fauthentication%2Flogin-callback&response_type=code&scope=Web.ServerAPI%20openid%20profile&state=4b9b0120a48442a786b5bc8260c52f65&code_challenge=ViBkoIwumlfy_kg_y0bAh9uFsEByt2aKDOVUSREfARE&code_challenge_method=S256&prompt=none&response_mode=query file:

An unhandled exception occurred while processing the request.
MissingMethodException: Method not found: '!!0 AutoMapper.IMapper.Map(System.Object)'.
IdentityServer4.EntityFramework.Mappers.PersistedGrantMappers.ToEntity(PersistedGrant model)

Stack:

MissingMethodException: Method not found: '!!0 AutoMapper.IMapper.Map(System.Object)'.

IdentityServer4.EntityFramework.Mappers.PersistedGrantMappers.ToEntity(PersistedGrant model)
IdentityServer4.EntityFramework.Stores.PersistedGrantStore.StoreAsync(PersistedGrant token)
IdentityServer4.Stores.DefaultGrantStore<T>.StoreItemAsync(string key, T item, string clientId, string subjectId, DateTime created, Nullable<DateTime> expiration)
IdentityServer4.Stores.DefaultGrantStore<T>.CreateItemAsync(T item, string clientId, string subjectId, DateTime created, int lifetime)
IdentityServer4.ResponseHandling.AuthorizeResponseGenerator.CreateCodeFlowResponseAsync(ValidatedAuthorizeRequest request)
IdentityServer4.ResponseHandling.AuthorizeResponseGenerator.CreateResponseAsync(ValidatedAuthorizeRequest request)
IdentityServer4.Endpoints.AuthorizeEndpointBase.ProcessAuthorizeRequestAsync(NameValueCollection parameters, ClaimsPrincipal user, ConsentResponse consent)
IdentityServer4.Endpoints.AuthorizeEndpoint.ProcessAsync(HttpContext context)
IdentityServer4.Hosting.IdentityServerMiddleware.Invoke(HttpContext context, IEndpointRouter router, IUserSession session, IEventService events)
IdentityServer4.Hosting.IdentityServerMiddleware.Invoke(HttpContext context, IEndpointRouter router, IUserSession session, IEventService events)
IdentityServer4.Hosting.MutualTlsTokenEndpointMiddleware.Invoke(HttpContext context, IAuthenticationSchemeProvider schemes)
Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)
IdentityServer4.Hosting.BaseUrlMiddleware.Invoke(HttpContext context)
Microsoft.AspNetCore.Builder.Extensions.MapWhenMiddleware.Invoke(HttpContext context)
Microsoft.AspNetCore.Builder.Extensions.MapMiddleware.Invoke(HttpContext context)
Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore.MigrationsEndPointMiddleware.Invoke(HttpContext context)
Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore.DatabaseErrorPageMiddleware.Invoke(HttpContext httpContext)
Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore.DatabaseErrorPageMiddleware.Invoke(HttpContext httpContext)
Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)

Show raw exception details

System.MissingMethodException: Method not found: '!!0 AutoMapper.IMapper.Map(System.Object)'.
   at IdentityServer4.EntityFramework.Mappers.PersistedGrantMappers.ToEntity(PersistedGrant model)
   at IdentityServer4.EntityFramework.Stores.PersistedGrantStore.StoreAsync(PersistedGrant token)
   at IdentityServer4.Stores.DefaultGrantStore`1.StoreItemAsync(String key, T item, String clientId, String subjectId, DateTime created, Nullable`1 expiration)
   at IdentityServer4.Stores.DefaultGrantStore`1.CreateItemAsync(T item, String clientId, String subjectId, DateTime created, Int32 lifetime)
   at IdentityServer4.ResponseHandling.AuthorizeResponseGenerator.CreateCodeFlowResponseAsync(ValidatedAuthorizeRequest request)
   at IdentityServer4.ResponseHandling.AuthorizeResponseGenerator.CreateResponseAsync(ValidatedAuthorizeRequest request)
   at IdentityServer4.Endpoints.AuthorizeEndpointBase.ProcessAuthorizeRequestAsync(NameValueCollection parameters, ClaimsPrincipal user, ConsentResponse consent)
   at IdentityServer4.Endpoints.AuthorizeEndpoint.ProcessAsync(HttpContext context)
   at IdentityServer4.Hosting.IdentityServerMiddleware.Invoke(HttpContext context, IEndpointRouter router, IUserSession session, IEventService events)
   at IdentityServer4.Hosting.IdentityServerMiddleware.Invoke(HttpContext context, IEndpointRouter router, IUserSession session, IEventService events)
   at IdentityServer4.Hosting.MutualTlsTokenEndpointMiddleware.Invoke(HttpContext context, IAuthenticationSchemeProvider schemes)
   at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)
   at IdentityServer4.Hosting.BaseUrlMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Builder.Extensions.MapWhenMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Builder.Extensions.MapMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore.MigrationsEndPointMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore.DatabaseErrorPageMiddleware.Invoke(HttpContext httpContext)
   at Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore.DatabaseErrorPageMiddleware.Invoke(HttpContext httpContext)
   at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)

[brockallen]

You on the latest version? #4677

[ghost]

I Using Blazor Webassembly Individual user account with default Authentication, unless not the latest version by default.

[brockallen]

Yea, the Microsoft templates are behind. You should not update AutoMapper if you're using their older templates.

[ghost]

but when I changed the default identity server to the last version (to identity server4 4.0.4) and give me new error :
System.MissingMethodException: 'Method not found: 'System.Collections.Generic.ICollection`1<IdentityServer4.Models.Scope> IdentityServer4.Models.ApiResource.get_Scopes()'.'

#4752

[adupton]

System.MissingMethodException: Method not found: '!!0 AutoMapper.IMapper.Map(System.Object). This also occurs for me when creating an AspNetCore 3.1 web application using the Angular template with Individual Accounts for Authentication.

[fmir864]

Also occurs for React JS template using the Individual Accounts in AspNetCore 3.1 as well, reverting the AutoMapper to v9 and AutoMapper.Extensions.Microsoft.DependencyInjection to v7 fixes this.

[adupton]

This happens to me in Visual Studio Community Edition but Enterprise Edition it works fine.

[buhaiov-vs]

I also came across this issue.

[CannyGent]

Also have this issue on Blazor webassembly

[brockallen]

The current Microsoft templates are not compatible with the v4.x version of IdentityServer. You will have to wait for Microsoft to update them.

[deanilvincent]

I'm facing the same issue with .net core 3.1 Angular Template with version 8.0.0.
So I switched to version 7.0.0 and it works fine. Will wait for the version 8.0.0 compatibility with the 3.1 angular template.

[akhakpouri]

Same. I'm having the same issue in a .net core 3.1 project with Anular 10. After upgrading IdentityServer4 to 4.1.1, I started encountering this exception. is there a fix for this?

[akhakpouri]

You can disregard my message above. I realized that I was referencing to Automapper v 9.0. By upgrading AutoMapper to v 10.0, it worked fine.

[github-actions]

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