[phpBB Debug] PHP Warning: in file [ROOT]/vendor/composer/ClassLoader.php on line 571: include(): Failed opening '[ROOT]/vendor/composer/../symfony/yaml/Unescaper.php' for inclusion (include_path='.:/opt/alt/php82/usr/share/pear:/opt/alt/php82/usr/share/php:/usr/share/pear:/usr/share/php')
Fatal error: Uncaught Error: Class "Symfony\Component\Yaml\Unescaper" not found in /home/G/geobergenno/subdomener/forum/vendor/symfony/yaml/Inline.php:388
Stack trace:
#0 /home/G/geobergenno/subdomener/forum/vendor/symfony/yaml/Inline.php(325): Symfony\Component\Yaml\Inline::parseQuotedScalar()
#1 /home/G/geobergenno/subdomener/forum/vendor/symfony/yaml/Inline.php(126): Symfony\Component\Yaml\Inline::parseScalar()
#2 /home/G/geobergenno/subdomener/forum/vendor/symfony/yaml/Parser.php(749): Symfony\Component\Yaml\Inline::parse()
#3 /home/G/geobergenno/subdomener/forum/vendor/symfony/yaml/Parser.php(249): Symfony\Component\Yaml\Parser->parseValue()
#4 /home/G/geobergenno/subdomener/forum/vendor/symfony/yaml/Parser.php(522): Symfony\Component\Yaml\Parser->doParse()
#5 /home/G/geobergenno/subdomener/forum/vendor/symfony/yaml/Parser.php(378): Symfony\Component\Yaml\Parser->parseBlock()
#6 /home/G/geobergenno/subdomener/forum/vendor/symfony/yaml/Parser.php(522): Symfony\Component\Yaml\Parser->doParse()
#7 /home/G/geobergenno/subdomener/forum/vendor/symfony/yaml/Parser.php(378): Symfony\Component\Yaml\Parser->parseBlock()
#8 /home/G/geobergenno/subdomener/forum/vendor/symfony/yaml/Parser.php(522): Symfony\Component\Yaml\Parser->doParse()
#9 /home/G/geobergenno/subdomener/forum/vendor/symfony/yaml/Parser.php(378): Symfony\Component\Yaml\Parser->parseBlock()
#10 /home/G/geobergenno/subdomener/forum/vendor/symfony/yaml/Parser.php(142): Symfony\Component\Yaml\Parser->doParse()
#11 /home/G/geobergenno/subdomener/forum/vendor/symfony/yaml/Parser.php(78): Symfony\Component\Yaml\Parser->parse()
#12 /home/G/geobergenno/subdomener/forum/vendor/symfony/dependency-injection/Loader/YamlFileLoader.php(661): Symfony\Component\Yaml\Parser->parseFile()
#13 /home/G/geobergenno/subdomener/forum/vendor/symfony/dependency-injection/Loader/YamlFileLoader.php(117): Symfony\Component\DependencyInjection\Loader\YamlFileLoader->loadFile()
#14 /home/G/geobergenno/subdomener/forum/vendor/symfony/config/Loader/FileLoader.php(153): Symfony\Component\DependencyInjection\Loader\YamlFileLoader->load()
#15 /home/G/geobergenno/subdomener/forum/vendor/symfony/config/Loader/FileLoader.php(90): Symfony\Component\Config\Loader\FileLoader->doImport()
#16 /home/G/geobergenno/subdomener/forum/vendor/symfony/dependency-injection/Loader/YamlFileLoader.php(195): Symfony\Component\Config\Loader\FileLoader->import()
#17 /home/G/geobergenno/subdomener/forum/vendor/symfony/dependency-injection/Loader/YamlFileLoader.php(127): Symfony\Component\DependencyInjection\Loader\YamlFileLoader->parseImports()
#18 /home/G/geobergenno/subdomener/forum/vendor/symfony/config/Loader/FileLoader.php(153): Symfony\Component\DependencyInjection\Loader\YamlFileLoader->load()
#19 /home/G/geobergenno/subdomener/forum/vendor/symfony/config/Loader/FileLoader.php(90): Symfony\Component\Config\Loader\FileLoader->doImport()
#20 /home/G/geobergenno/subdomener/forum/vendor/symfony/dependency-injection/Loader/YamlFileLoader.php(195): Symfony\Component\Config\Loader\FileLoader->import()
#21 /home/G/geobergenno/subdomener/forum/vendor/symfony/dependency-injection/Loader/YamlFileLoader.php(127): Symfony\Component\DependencyInjection\Loader\YamlFileLoader->parseImports()
#22 /home/G/geobergenno/subdomener/forum/phpbb/di/extension/core.php(57): Symfony\Component\DependencyInjection\Loader\YamlFileLoader->load()
#23 /home/G/geobergenno/subdomener/forum/vendor/symfony/dependency-injection/Compiler/MergeExtensionConfigurationPass.php(71): phpbb\di\extension\core->load()
#24 /home/G/geobergenno/subdomener/forum/vendor/symfony/http-kernel/DependencyInjection/MergeExtensionConfigurationPass.php(39): Symfony\Component\DependencyInjection\Compiler\MergeExtensionConfigurationPass->process()
#25 /home/G/geobergenno/subdomener/forum/vendor/symfony/dependency-injection/Compiler/Compiler.php(140): Symfony\Component\HttpKernel\DependencyInjection\MergeExtensionConfigurationPass->process()
#26 /home/G/geobergenno/subdomener/forum/vendor/symfony/dependency-injection/ContainerBuilder.php(789): Symfony\Component\DependencyInjection\Compiler\Compiler->compile()
#27 /home/G/geobergenno/subdomener/forum/phpbb/di/container_builder.php(448): Symfony\Component\DependencyInjection\ContainerBuilder->compile()
#28 /home/G/geobergenno/subdomener/forum/phpbb/di/container_builder.php(162): phpbb\di\container_builder->load_extensions()
#29 /home/G/geobergenno/subdomener/forum/common.php(127): phpbb\di\container_builder->get_container()
#30 /home/G/geobergenno/subdomener/forum/viewforum.php(20): include('/home/G/geoberg...')
#31 {main}
thrown in /home/G/geobergenno/subdomener/forum/vendor/symfony/yaml/Inline.php on line 388