Unable to create Release Build because .dll is being used by another process.

My project works fine in DEBUG.
But for some reason, when trying to make a release build, always get the following error:

Severity    Code    Description Project File    Line    Suppression State
Error       The process cannot access the file 'D:\Albertoha94\Documents\Visual Studio 2019\Fighter-MoveList\Fighter-MoveList.Android\obj\Release\100\androidx\cecil\Fighter-MoveList.dll' because it is being used by another process.
   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share)
   at Mono.Cecil.ModuleDefinition.ReadModule(String fileName, ReaderParameters parameters)
   at Xamarin.AndroidX.Migration.CecilMigrator.ReadAssembly(AssemblyResolver resolver, String path)
   at Xamarin.AndroidX.Migration.CecilMigrator.Migrate(String source, String destination)
   at Xamarin.AndroidX.Migration.CecilMigrator.Migrate(IEnumerable`1 assemblies)
   at Xamarin.AndroidX.Migration.BuildTasks.CecilfyFiles.Execute()  Fighter-MoveList.Android    D:\Albertoha94\_nugets\packages\xamarin.androidx.migration\1.0.0.1\buildTransitive\monoandroid90\Xamarin.AndroidX.Migration.targets 227 

I don't know if this is related in some way to AndroidX since i migrated my app to that but when doing a rollback I still got the issue and it still says androidx in the folder.
I tried what it was suggested in github to reduces the number of parallel project build to 1 but still no success, I also tried deleting all bin, obj & .suo but error still pops.

Is there something else I could try?