Warning: Uncaught TYPO3\CMS\Core\Error\Exception: PHP Warning: require_once(/home/www/p347456/html/typo3/fileadmin/php/class.user_notfound.php): failed to open stream: No such file or directory in /html/typo3/typo3_src-7.6.43/typo3/sysext/core/Classes/Utility/GeneralUtility.php line 4888 in /html/typo3/typo3_src-7.6.43/typo3/sysext/core/Classes/Error/ErrorHandler.php:111 Stack trace: #0 /html/typo3/typo3_src-7.6.43/typo3/sysext/core/Classes/Utility/GeneralUtility.php(4888): TYPO3\CMS\Core\Error\ErrorHandler->handleError(2, 'require_once(/h...', '/html/typo3/typ...', 4888, Array) #1 /html/typo3/typo3_src-7.6.43/typo3/sysext/core/Classes/Utility/GeneralUtility.php(4888): require_once() #2 /html/typo3/typo3_src-7.6.43/typo3/sysext/core/Classes/Utility/GeneralUtility.php(4376): TYPO3\CMS\Core\Utility\GeneralUtility::requireOnce('/home/www/p3474...') #3 /html/typo3/typo3_src-7.6.43/typo3/sysext/frontend/Classes/Controller/TypoScriptFrontendController.php(2100): TYPO3\CMS\Core\Utility\GeneralUtility::callUserFunction('filea in /html/typo3/typo3_src-7.6.43/typo3/sysext/core/Classes/Error/ErrorHandler.php on line 111

Fatal error: TYPO3\CMS\Core\Utility\GeneralUtility::requireOnce(): Failed opening required '/home/www/p347456/html/typo3/fileadmin/php/class.user_notfound.php' (include_path='/html/typo3/typo3_src-7.6.43/vendor/pear/pear_exception:/html/typo3/typo3_src-7.6.43/vendor/pear/http_request2:.:/opt/php/7.1/lib/php') in /html/typo3/typo3_src-7.6.43/typo3/sysext/core/Classes/Utility/GeneralUtility.php on line 4888