Bug Duplicate entry 'XFMG\Entity\MediaItem error

[saeedmo79]

Hello dear
Greetings,

XF\Db\DuplicateKeyException: MySQL query error [1062]: Duplicate entry 'XFMG\Entity\MediaItem-DBTech\Credits\XFMG\Entity\MediaItem' for key 'from_class' in src/XF/Db/AbstractStatement.php at line 230

I have one client who facing this problem, may I get an idea about it? does this cause by the server or something else?
Thank you.

 

[Fillip H.]

The person who purchased the license would need to be the one asking the question, sorry.