Possible null reference argument for parameter 'sourceFileName' in 'void File.Move(string sourceFileName, string destFileName, bool overwrite)'.

The type 'Eto.Forms.TextBox?' cannot be used as type parameter 'TControl' in the generic type or method 'PatchForm<Patcher>.AddField<TControl>(string, out TControl, Button?, int)'. Nullability of type argument 'Eto.Forms.TextBox?' doesn't match constraint type 'Eto.Forms.Control'.

Non-nullable field '_tempFile' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable field '_usrDir' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.