SQLSTATE[HY000]: General error: 1449 The user specified as a definer ('testuser'@'localhost') does not exist, query was: INSERT INTO `catalog_product_entity_media_gallery` (`attribute_id`, `value`, `media_type`) VALUES (?, ?, ?)
The steps below allow you to customize the definer:
Go to PHPMyAdmin Select your Database Select your table Click on 'Triggers' in the top menu Click 'Edit' to modify the trigger Change definer from (e.g. [testuser@localhost] to your definer e.g. root@localhost
Good luck
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