Non-nullable field 'currentUser' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the field as nullable.

The type 'Blazing.Data.MusicFile?' cannot be used as type parameter 'TEntity' in the generic type or method 'DbContext.Attach<TEntity>(TEntity)'. Nullability of type argument 'Blazing.Data.MusicFile?' doesn't match 'class' constraint.

Non-nullable property 'Title' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Dereference of a possibly null reference.

Non-nullable field 'currentUser' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the field as nullable.

The type 'Blazing.Data.MusicFile?' cannot be used as type parameter 'TEntity' in the generic type or method 'DbContext.Attach<TEntity>(TEntity)'. Nullability of type argument 'Blazing.Data.MusicFile?' doesn't match 'class' constraint.

Non-nullable property 'Title' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Dereference of a possibly null reference.

Non-nullable field 'currentUser' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the field as nullable.

The type 'Blazing.Data.MusicFile?' cannot be used as type parameter 'TEntity' in the generic type or method 'DbContext.Attach<TEntity>(TEntity)'. Nullability of type argument 'Blazing.Data.MusicFile?' doesn't match 'class' constraint.

Non-nullable property 'Title' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.