Warning: include(/var/www/clients/client1/web54/private/typo3_src-11.5.0/vendor/composer/../psr/log/Psr/Log/LogLevel.php): failed to open stream: No such file or directory in /var/www/clients/client1/web54/private/typo3_src-11.5.0/vendor/composer/ClassLoader.php on line 480

Warning: include(): Failed opening '/var/www/clients/client1/web54/private/typo3_src-11.5.0/vendor/composer/../psr/log/Psr/Log/LogLevel.php' for inclusion (include_path='.:/usr/share/php') in /var/www/clients/client1/web54/private/typo3_src-11.5.0/vendor/composer/ClassLoader.php on line 480

Fatal error: Uncaught Error: Class 'Psr\Log\LogLevel' not found in /var/www/clients/client1/web54/private/typo3_src-11.5.0/typo3/sysext/core/Classes/Log/LogLevel.php:23 Stack trace: #0 /var/www/clients/client1/web54/private/typo3_src-11.5.0/vendor/composer/ClassLoader.php(480): include() #1 /var/www/clients/client1/web54/private/typo3_src-11.5.0/vendor/composer/ClassLoader.php(346): Composer\Autoload\includeFile() #2 /var/www/clients/client1/web54/private/typo3_src-11.5.0/vendor/typo3/class-alias-loader/src/ClassAliasLoader.php(135): Composer\Autoload\ClassLoader->loadClass() #3 /var/www/clients/client1/web54/private/typo3_src-11.5.0/vendor/typo3/class-alias-loader/src/ClassAliasLoader.php(123): TYPO3\ClassAliasLoader\ClassAliasLoader->loadClass() #4 [internal function]: TYPO3\ClassAliasLoader\ClassAliasLoader->loadClassWithAlias() #5 /var/www/clients/client1/web54/private/typo3_src-11.5.0/typo3/sysext/core/Configuration/DefaultConfiguration.php(1499): spl_autoload_call() #6 /var/www/clients/client1/web54/private/typo3_sr in /var/www/clients/client1/web54/private/typo3_src-11.5.0/typo3/sysext/core/Classes/Log/LogLevel.php on line 23