MediaWiki internal error.

Original exception: exception 'ErrorPageError' with message 'ページ名が未入力、無効、または正しくない言語間リンク・ウィキ間リンクです。ページ名に利用できない文字が含まれている可能性があります。' in /var/www/html/ictmax.jpn.ph/mediawiki/includes/Wiki.php:176
Stack trace:
#0 /var/www/html/ictmax.jpn.ph/mediawiki/includes/Wiki.php(55): MediaWiki->initializeSpecialCases(Object(Title), Object(OutputPage), Object(WebRequest))
#1 /var/www/html/ictmax.jpn.ph/mediawiki/index.php(93): MediaWiki->initialize(Object(Title), NULL, Object(OutputPage), Object(User), Object(WebRequest))
#2 {main}

Exception caught inside exception handler: exception 'DBConnectionError' with message 'DB connection error: Unknown error (localhost)' in /var/www/html/ictmax.jpn.ph/mediawiki/includes/db/Database.php:461
Stack trace:
#0 /var/www/html/ictmax.jpn.ph/mediawiki/includes/db/LoadBalancer.php(686): Database->reportConnectionError('Unknown error (...')
#1 /var/www/html/ictmax.jpn.ph/mediawiki/includes/db/LoadBalancer.php(453): LoadBalancer->reportConnectionError(Object(DatabaseMysql))
#2 /var/www/html/ictmax.jpn.ph/mediawiki/includes/GlobalFunctions.php(2564): LoadBalancer->getConnection(-1, Array, false)
#3 /var/www/html/ictmax.jpn.ph/mediawiki/includes/LinkCache.php(158): wfGetDB(-1)
#4 /var/www/html/ictmax.jpn.ph/mediawiki/includes/Title.php(1899): LinkCache->addLinkObj(Object(Title))
#5 /var/www/html/ictmax.jpn.ph/mediawiki/includes/Linker.php(284): Title->getArticleID()
#6 /var/www/html/ictmax.jpn.ph/mediawiki/includes/OutputPage.php(1275): Linker->makeLinkObj(Object(Title))
#7 /var/www/html/ictmax.jpn.ph/mediawiki/includes/OutputPage.php(1306): OutputPage->addReturnTo(Object(Title))
#8 /var/www/html/ictmax.jpn.ph/mediawiki/includes/OutputPage.php(958): OutputPage->returnToMain()
#9 [internal function]: OutputPage->showErrorPage('badtitle', 'badtitletext')
#10 /var/www/html/ictmax.jpn.ph/mediawiki/includes/StubObject.php(58): call_user_func_array(Array, Array)
#11 /var/www/html/ictmax.jpn.ph/mediawiki/includes/StubObject.php(76): StubObject->_call('showErrorPage', Array)
#12 [internal function]: StubObject->__call('showErrorPage', Array)
#13 /var/www/html/ictmax.jpn.ph/mediawiki/includes/Exception.php(242): StubObject->showErrorPage('badtitle', 'badtitletext')
#14 /var/www/html/ictmax.jpn.ph/mediawiki/includes/Exception.php(260): ErrorPageError->report()
#15 /var/www/html/ictmax.jpn.ph/mediawiki/includes/Exception.php(303): wfReportException(Object(ErrorPageError))
#16 [internal function]: wfExceptionHandler(Object(ErrorPageError))
#17 {main}