In ExceptionConverter.php line 62:
[Doctrine\DBAL\Exception\UniqueConstraintViolationException (1062)]
An exception occurred while executing a query: SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry ‚\x01\x8D}a\xBF}r\xD3\xB7\xAA\xE2\x02\xFA
4\xE5\x19-product‘ for key ‚custom_field_set_relation.uniq.custom_field_set_relation.entity_name‘
Jemand hat eine lösung bitte?