Fatal error: During inheritance of Iterator: Uncaught TYPO3\CMS\Core\Cache\Exception\NoSuchCacheException: A cache with identifier "assets" does not exist. in /html/digital-tradefair.net/typo3/typo3_src-9.5.14/typo3/sysext/core/Classes/Cache/CacheManager.php:137 Stack trace: #0 /html/digital-tradefair.net/typo3/typo3_src-9.5.14/typo3/sysext/core/Classes/Imaging/IconRegistry.php(540): TYPO3\CMS\Core\Cache\CacheManager->getCache('assets') #1 /html/digital-tradefair.net/typo3/typo3_src-9.5.14/typo3/sysext/core/Classes/Imaging/IconRegistry.php(514): TYPO3\CMS\Core\Imaging\IconRegistry->getCachedBackendIcons() #2 /html/digital-tradefair.net/typo3/typo3_src-9.5.14/typo3/sysext/core/Classes/Imaging/IconRegistry.php(494): TYPO3\CMS\Core\Imaging\IconRegistry->initialize() #3 /html/digital-tradefair.net/typo3/typo3_src-9.5.14/typo3/sysext/core/Classes/Utility/GeneralUtility.php(3681): TYPO3\CMS\Core\Imaging\IconRegistry->__construct() #4 /html/digital-tradefair.net/typo3/typo3_src-9.5.14/typo3/sysext/core/Classes/Imaging/IconFactory.php(65): TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\...') #5 /html/digital-tradefair.net/typo3/typo3_src-9.5.14/typo3/sysext/core/Classes/Utility/GeneralUtility.php(3681): TYPO3\CMS\Core\Imaging\IconFactory->__construct() #6 /html/digital-tradefair.net/typo3/typo3_src-9.5.14/typo3/sysext/core/Classes/TimeTracker/TimeTracker.php(219): TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\...') #7 /html/digital-tradefair.net/typo3/typo3_src-9.5.14/typo3/sysext/core/Classes/Error/ErrorHandler.php(156): TYPO3\CMS\Core\TimeTracker\TimeTracker->setTSlogMessage('Core: Error han...', 1) #8 /html/digital-tradefair.net/typo3/typo3_src-9.5.14/typo3/sysext/core/Classes/Compatibility/LoadedExtensionsArray.php(22): TYPO3\CMS\Core\Error\ErrorHandler->handleError(8192, 'Return type of ...', '/html/digital-t...', 142) #9 /html/digital-tradefair.net/typo3/typo3_src-9.5.14/vendor/composer/ClassLoader.php(444): include('/html/digital-t...') #10 /html/digital-tradefair.net/typo3/typo3_src-9.5.14/vendor/composer/ClassLoader.php(322): Composer\Autoload\includeFile('/html/digital-t...') #11 /html/digital-tradefair.net/typo3/typo3_src-9.5.14/vendor/typo3/class-alias-loader/src/ClassAliasLoader.php(130): Composer\Autoload\ClassLoader->loadClass('TYPO3\\CMS\\Core\\...') #12 /html/digital-tradefair.net/typo3/typo3_src-9.5.14/vendor/typo3/class-alias-loader/src/ClassAliasLoader.php(120): TYPO3\ClassAliasLoader\ClassAliasLoader->loadClass('TYPO3\\CMS\\Core\\...') #13 /html/digital-tradefair.net/typo3/typo3_src-9.5.14/typo3/sysext/core/Classes/Package/PackageManager.php(309): TYPO3\ClassAliasLoader\ClassAliasLoader->loadClassWithAlias('TYPO3\\CMS\\Core\\...') #14 /html/digital-tradefair.net/typo3/typo3_src-9.5.14/typo3/sysext/core/Classes/Package/PackageManager.php(150): TYPO3\CMS\Core\Package\PackageManager->initializeCompatibilityLoadedExtArray() #15 /html/digital-tradefair.net/typo3/typo3_src-9.5.14/typo3/sysext/core/Classes/Core/Bootstrap.php(503): TYPO3\CMS\Core\Package\PackageManager->initialize() #16 /html/digital-tradefair.net/typo3/typo3_src-9.5.14/typo3/sysext/core/Classes/Core/Bootstrap.php(112): TYPO3\CMS\Core\Core\Bootstrap::createPackageManager('TYPO3\\CMS\\Core\\...', Object(TYPO3\CMS\Core\Cache\Frontend\PhpFrontend)) #17 /html/digital-tradefair.net/typo3/typo3_src-9.5.14/index.php(24): TYPO3\CMS\Core\Core\Bootstrap::init(Object(Composer\Autoload\ClassLoader)) #18 /html/digital-tradefair.net/typo3/typo3_src-9.5.14/index.php(25): {closure}() #19 {main} in /html/digital-tradefair.net/typo3/typo3_src-9.5.14/typo3/sysext/core/Classes/Compatibility/LoadedExtensionsArray.php on line 22