Class '\t3lib_cache_backend_FileBackend' not found

0
votes

After updating TYPO3 from 4.5 to 7.6 and a PHP update from 5.3 to 5.5 I get this error in the install tool:

Detected Fatal Error

Class '\t3lib_cache_backend_FileBackend' not found in /var/www/htdocs/typo3src/typo3_src-7.6.9/typo3/sysext/core/Classes/Cache/CacheFactory.php on line 76

PHP-Version is 5.5.36. A new download of the TYPO3 src did not solve it.

2
phptypo3
possibilities: clear cache and remove or rename typo3temp or permission issue or check here please github.com/cogitatio/TYPO3v4-Core/blob/master/t3lib/cache/… – Ghanshyam Gohel

2 Answers

1
votes

Check your LocalConfiguration.php for the missing class. You need to change it to TYPO3\\CMS\\Core\\Cache\\Backend\\FileBackend or comment that line temporary to get into install tool (probably multiple lines with similar classes). Alternatively upgrade first to 6.2 and run migration wizard and then upgrade to 7.6, which should go smoother.

0
votes

The solution: it was an old extension ws_less, that still required this class. I found it by grep FileBackend * -R in typo3conf/ext/. After deactivating it in PackageStates.php everything ran smoothly. Thanks for pointing me in the right direction.