Fatal error: Uncaught Error: Class "FormatJson" not found in /home/gamersto/mediawiki/includes/exception/MWExceptionHandler.php:794 Stack trace: #0 /home/gamersto/mediawiki/includes/exception/MWExceptionHandler.php(336): MWExceptionHandler::logError(Object(ErrorException), 'error', 'error', 'mwe_handler') #1 /home/gamersto/mediawiki/includes/AutoLoader.php(244): MWExceptionHandler::handleError(8, 'require(): Read...', '/home/gamersto/...', 244) #2 /home/gamersto/mediawiki/includes/AutoLoader.php(244): require('/home/gamersto/...') #3 /home/gamersto/mediawiki/includes/exception/MWExceptionHandler.php(756): AutoLoader::autoload('FormatJson') #4 /home/gamersto/mediawiki/includes/exception/MWExceptionHandler.php(193): MWExceptionHandler::logException(Object(Error), 'mwe_handler') #5 /home/gamersto/mediawiki/includes/exception/MWExceptionHandler.php(247): MWExceptionHandler::rollbackPrimaryChangesAndLog(Object(Error), 'mwe_handler') #6 /home/gamersto/mediawiki/includes/exception/MWExceptionHandler.php(216): MWExceptionHandler::handleException(Object(Error), 'mwe_handler') #7 [internal function]: MWExceptionHandler::handleUncaughtException(Object(Error)) #8 {main} thrown in /home/gamersto/mediawiki/includes/exception/MWExceptionHandler.php on line 794