Fatal error: Uncaught exception 'BadFunctionCallException' with message 'TYPO3 Fatal Error: Extension key "pt_extbase" is NOT loaded!' in /homepages/26/d17455497/htdocs/YPO3/MyCMS/typo3/sysext/core/Classes/Utility/ExtensionManagementUtility.php:122 Stack trace: #0 /homepages/26/d17455497/htdocs/YPO3/MyCMS/typo3conf/ext/pt_extlist/ext_autoload.php(35): TYPO3\CMS\Core\Utility\ExtensionManagementUtility::extPath('pt_extbase') #1 /homepages/26/d17455497/htdocs/YPO3/MyCMS/typo3/sysext/core/Classes/Package/Package.php(307): require('/homepages/26/d...') #2 /homepages/26/d17455497/htdocs/YPO3/MyCMS/typo3/sysext/core/Classes/Core/ClassLoader.php(613): TYPO3\CMS\Core\Package\Package->getClassFilesFromAutoloadRegistry() #3 /homepages/26/d17455497/htdocs/YPO3/MyCMS/typo3/sysext/core/Classes/Core/ClassLoader.php(532): TYPO3\CMS\Core\Core\ClassLoader->loadClassFilesFromAutoloadRegistryIntoRuntimeClassInformationCache(Array) #4 /homepages/26/d17455497/htdocs/YPO3/MyCMS/typo3/sysext/core/Classes/Core/ClassLoader.php(486): TYPO3\CMS\Core in /homepages/26/d17455497/htdocs/YPO3/MyCMS/typo3/sysext/core/Classes/Utility/ExtensionManagementUtility.php on line 122