Nullability of reference types in return type doesn't match overridden member.

'StorageRepository.Delete(Guid)' hides inherited member 'GenericRepository<Resource, Guid>.Delete(Guid)'. To make the current member override that implementation, add the override keyword. Otherwise add the new keyword.

'StorageRepository.Update(Resource)' hides inherited member 'GenericRepository<Resource, Guid>.Update(Resource)'. To make the current member override that implementation, add the override keyword. Otherwise add the new keyword.

'StorageRepository.Add(Resource)' hides inherited member 'GenericRepository<Resource, Guid>.Add(Resource)'. To make the current member override that implementation, add the override keyword. Otherwise add the new keyword.

'StorageRepository.GetAll()' hides inherited member 'GenericRepository<Resource, Guid>.GetAll()'. To make the current member override that implementation, add the override keyword. Otherwise add the new keyword.

'StorageRepository.GetById(Guid)' hides inherited member 'GenericRepository<Resource, Guid>.GetById(Guid)'. To make the current member override that implementation, add the override keyword. Otherwise add the new keyword.

Nullability of type of parameter 'value' doesn't match overridden member (possibly because of nullability attributes).

'User.Email' hides inherited member 'IdentityUser<Guid>.Email'. To make the current member override that implementation, add the override keyword. Otherwise add the new keyword.

'ApplicationDbContext.UserRoles' hides inherited member 'IdentityDbContext<User, Role, Guid, IdentityUserClaim<Guid>, IdentityUserRole<Guid>, IdentityUserLogin<Guid>, IdentityRoleClaim<Guid>, IdentityUserToken<Guid>>.UserRoles'. To make the current member override that implementation, add the override keyword. Otherwise add the new keyword.