'IEnumerable<string>' does not contain a definition for 'IsNullOrEmpty' and no accessible extension method 'IsNullOrEmpty' accepting a first argument of type 'IEnumerable<string>' could be found (are you missing a using directive or an assembly reference?)

Dereference of a possibly null reference.

'IEnumerable<string>' does not contain a definition for 'IsNullOrEmpty' and no accessible extension method 'IsNullOrEmpty' accepting a first argument of type 'IEnumerable<string>' could be found (are you missing a using directive or an assembly reference?)

Dereference of a possibly null reference.

Assets file '/home/runner/work/app-lib-dotnet/app-lib-dotnet/src/Altinn.App.Api/obj/project.assets.json' doesn't have a target for '.NETFramework,Version=v8.0'. Ensure that restore has run and that you have included 'net80' in the TargetFrameworks for your project.

Assets file '/home/runner/work/app-lib-dotnet/app-lib-dotnet/test/Altinn.App.Core.Tests/obj/project.assets.json' doesn't have a target for '.NETFramework,Version=v8.0'. Ensure that restore has run and that you have included 'net80' in the TargetFrameworks for your project.

Assets file '/home/runner/work/app-lib-dotnet/app-lib-dotnet/test/Altinn.App.Api.Tests/obj/project.assets.json' doesn't have a target for '.NETFramework,Version=v8.0'. Ensure that restore has run and that you have included 'net80' in the TargetFrameworks for your project.

Assets file '/home/runner/work/app-lib-dotnet/app-lib-dotnet/src/Altinn.App.Core/obj/project.assets.json' doesn't have a target for '.NETFramework,Version=v8.0'. Ensure that restore has run and that you have included 'net80' in the TargetFrameworks for your project.

Assets file '/home/runner/work/app-lib-dotnet/app-lib-dotnet/test/Altinn.App.Common.Tests/obj/project.assets.json' doesn't have a target for '.NETFramework,Version=v8.0'. Ensure that restore has run and that you have included 'net80' in the TargetFrameworks for your project.

We were unable to automatically build your code. Please replace the call to the autobuild action with your custom build steps. Encountered a fatal error while running "/opt/hostedtoolcache/CodeQL/2.19.1/x64/codeql/csharp/tools/autobuild.sh". Exit code was 1 and last log line was: Error: Could not auto-detect a suitable build method. See the logs for more details.