Fix

Author: ondrejmirtes

src/Doctrine/Mapping/ClassMetadataFactory.php

@@ -47,7 +47,7 @@ protected function initialize(): void
 			'memory' => true,
 		], $config);
 
-		$em = new EntityManager($connection, $config);
+		$em = EntityManager::create($connection, $config);
 		$this->setEntityManager($em);
 		parent::initialize();