Invalid utf8mb4 character string

[rohan751]

Invalid utf8mb4 character string Warning message pops up when storing compressed text data in BinaryField. This message does not appear when using create() or bulk_create() django functions.

Exact error:
mysql/base.py:101: Warning: (1300, "Invalid utf8mb4 character string: 'D44F6F'")
return self.cursor.execute(query, args)