[492b5421e48ffcb17562e29c] /es/w/index.php?title=Especial:Entrar&returnto=Usuario+discusi%25C3%25B3n%253A138.94.218.133&returntoquery=action%253Dedit%2526redlink%253D1 Error from line 657 of /usr/share/nginx/html/ysmwiki.dip.jp/es/w/includes/exception/MWExceptionHandler.php: Class 'FormatJson' not found

Backtrace:

#0 /usr/share/nginx/html/ysmwiki.dip.jp/es/w/includes/exception/MWExceptionHandler.php(195): MWExceptionHandler::logError()
#1 /usr/share/nginx/html/ysmwiki.dip.jp/es/w/includes/AutoLoader.php(81): MWExceptionHandler::handleError()
#2 /usr/share/nginx/html/ysmwiki.dip.jp/es/w/includes/AutoLoader.php(81): require()
#3 [internal function]: AutoLoader::autoload()
#4 /usr/share/nginx/html/ysmwiki.dip.jp/es/w/includes/exception/MWExceptionHandler.php(621): spl_autoload_call()
#5 /usr/share/nginx/html/ysmwiki.dip.jp/es/w/includes/exception/MWExceptionHandler.php(111): MWExceptionHandler::logException()
#6 /usr/share/nginx/html/ysmwiki.dip.jp/es/w/includes/exception/MWExceptionHandler.php(129): MWExceptionHandler::rollbackMasterChangesAndLog()
#7 /usr/share/nginx/html/ysmwiki.dip.jp/es/w/includes/MediaWiki.php(550): MWExceptionHandler::handleException()
#8 /usr/share/nginx/html/ysmwiki.dip.jp/es/w/index.php(43): MediaWiki->run()
#9 {main}