I have googled so much and tried everything but can't get behind this. A client installed an extension on TYPO3 and we get the following error message in the backend and frontend.
Strict Standards: Non-static method t3lib_div::getClassName() should not be called statically in /homepages/25/d322968656/htdocs/typo3_src-4.3.14/t3lib/class.t3lib_div.php on line 5033
Fatal error: Uncaught exception 't3lib_error_Exception' with message 'PHP Runtime Notice: Non-static method t3lib_div::getClassName() should not be called statically in /homepages/25/d322968656/htdocs/typo3_src-4.3.14/t3lib/class.t3lib_div.php line 5033' in /homepages/25/d322968656/htdocs/typo3_src-4.3.14/t3lib/error/class.t3lib_error_errorhandler.php:106 Stack trace: #0 /homepages/25/d322968656/htdocs/typo3_src-4.3.14/t3lib/class.t3lib_div.php(5033): t3lib_error_ErrorHandler->handleError(2048, 'Non-static meth...', '/homepages/25/d...', 5033, Array) #1 /homepages/25/d322968656/htdocs/typo3_src-4.3.14/t3lib/class.t3lib_div.php(5033): t3lib_div::getClassName() #2 /homepages/25/d322968656/htdocs/typo3_src-4.3.14/typo3/sysext/cms/tslib/index_ts.php(143): t3lib_div::makeInstance('t3lib_error_Pro...') #3 /homepages/25/d322968656/htdocs/typo3_src-4.3.14/index.php(80): require('/homepages/25/d...') #4 {main} thrown in /homepages/25/d322968656/htdocs/typo3_src-4.3.14/t3lib/error/class.t3lib_error_errorhandler.php on line 106
Trying to log into the install tool gives this error message
Fatal error: Class 'TYPO3\CMS\Extbase\Utility\ExtensionUtility' not found in /homepages/25/d322968656/htdocs/ravati/typo3/typo3conf/ext/ke_questionnaire/ext_localconf.php on line 6
Any ideas for a TYPO3 beginner? :(((