Automapper issue with identityserver4 - MissingMethodException: Method not found: '!!0 AutoMapper.IMapper.Map(System.Object)'

Question

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

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)

Answer 1

Do not move backward, Do not downgrade, Upgrade

It seems that the AutoMapper 10.0.0 has a bug, the solution to that problem was to upgrade AutoMapper to 10.1.1 version.

This version is very new, it released 4 days before the date of this answer.

Answer 2

I don't think it's related to identityserver but more the fact that there was 2 differents version of AutoMapper used.

I just had this issue in a solution with a few projects in it and yesterday I updated AutoMapper in one of them leaving another project with the old version.

Result, the application was broken.

I just updated the other project and it's now working fine.

Answer 3

I had same issue because different project in the solution had different version of Automapper(9.0.0) and Automapper(10.1.1)

I changed all the projects within solution to have same dependencies. ie. Automaper(10.1.1) It got solved