BC Break Report

ClassMetadataFactory generates warnings because of assert, that was added in that version:
https://github.com/doctrine/orm/blob/2.11.x/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php#L98

2022-01-10T16:30:25+00:00 WARN (4): assert(): assert($classMetadata instanceof ClassMetadata) failed {"errno":2,"file":"./vendor/doctrine/orm/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php","line":98}