Fatal error: Uncaught RuntimeException: Cannot set the alias loader, as it is already registered! in /var/www/typo3/vendor/typo3/class-alias-loader/src/ClassAliasMap.php:72 Stack trace: #0 /var/www/typo3/vendor/typo3/alias-loader-include.php(9): TYPO3\ClassAliasLoader\ClassAliasMap::setClassAliasLoader(Object(TYPO3\ClassAliasLoader\ClassAliasLoader)) #1 {main} thrown in /var/www/typo3/vendor/typo3/class-alias-loader/src/ClassAliasMap.php on line 72