Добавьте файлы проекта.

PlaylistShared.Api/Mapping/AppMappingProfile.cs

@@ -0,0 +1,16 @@
+using AutoMapper;
+using PlaylistShared.Api.Entities;
+using PlaylistShared.Shared.Models;
+
+namespace PlaylistShared.Api.Mapping;
+
+public class AppMappingProfile : Profile
+{
+    public AppMappingProfile()
+    {
+        CreateMap<SharedPlaylistEntity, SharedPlaylistDto>()
+            .ForMember(dest => dest.Creator, opt => opt.MapFrom(src => src.Creator));
+        CreateMap<ApplicationUser, ApplicationUserDto>();
+        CreateMap<TrackAdditionLogEntity, TrackAdditionLogDto>();
+    }
+}