Login page won't show up and menus are always open

[temaoz]

I've I want to log in there's only a blank page shown.

Additionally all menus in the TitleBar are ('Tools', 'Pages' and 'User') are always opened and can't be hidden. Menus which are created in the Subnav can be shown and hidden like it should be.

• MediaWiki version: 1.26.0
• Language: de
• Skin Version: 1.0.0 (cloned git today)
• private Wiki ($wgGroupPermissions['*']['read'] = false;)

I've attached the debug log below:

Start request GET /mediawiki/index.php?title=Spezial:Anmelden&returnto=Hauptseite&returntoquery=
HTTP HEADERS:
HOST: wiki.company.local
USER-AGENT: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:47.0) Gecko/20100101 Firefox/47.0
ACCEPT: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
ACCEPT-LANGUAGE: de,en-US;q=0.7,en;q=0.3
DNT: 1
REFERER: http://wiki.company.local/mediawiki/index.php/Hauptseite
COOKIE: wikidb_session=peal0v1biefk402mqdltirl4m4; wikidbUserName=Kri; wikidbLoggedOut=1466513968
ACCEPT-ENCODING: gzip, deflate
ACCEPT-RANGES: none
VIA: 1.0 bb-srv-sxg-01.company.local (squid/3.3.11)
CACHE-CONTROL: max-age=0
CONNECTION: keep-alive
[caches] main: EmptyBagOStuff, message: SqlBagOStuff, parser: SqlBagOStuff
[caches] LocalisationCache: using store LCStoreDB
Connected to database 0 at localhost
Unstubbing $wgParser on call of $wgParser::setHook from efIACSetupAccessExtension
Parser: using preprocessor: Preprocessor_DOM
Fully initialised
IP: xxx.xxx.xx.xx
Connected to database 0 at localhost
[DBPerformance] [GET] Expectation (masterConns <= 0) by MediaWiki::main not met:
[connect to localhost (wikidb)]
TransactionProfiler.php line 307 calls wfBacktrace()
TransactionProfiler.php line 146 calls TransactionProfiler->reportExpectationViolated()
LoadBalancer.php line 545 calls TransactionProfiler->recordConnection()
SqlBagOStuff.php line 170 calls LoadBalancer->getConnection()
SqlBagOStuff.php line 246 calls SqlBagOStuff->getDB()
SqlBagOStuff.php line 224 calls SqlBagOStuff->getMulti()
MessageCache.php line 287 calls SqlBagOStuff->get()
MessageCache.php line 909 calls MessageCache->load()
MessageCache.php line 828 calls MessageCache->getMsgFromNamespace()
MessageCache.php line 766 calls MessageCache->getMessageFromFallbackChain()
Message.php line 1146 calls MessageCache->get()
Message.php line 769 calls Message->fetchMessage()
Message.php line 897 calls Message->toString()
SpecialUserlogin.php line 201 calls Message->escaped()
SpecialUserlogin.php line 270 calls LoginForm->load()
SpecialPage.php line 384 calls LoginForm->execute()
SpecialPageFactory.php line 553 calls SpecialPage->run()
MediaWiki.php line 249 calls SpecialPageFactory::executePath()
MediaWiki.php line 682 calls MediaWiki->performRequest()
MediaWiki.php line 476 calls MediaWiki->main()
index.php line 41 calls MediaWiki->run()

DatabaseBase::query: Writes done: REPLACE INTO `objectcache` (keyname,value,exptime) VALUES ('X')
[DBPerformance] [GET] Expectation (writes <= 0) by MediaWiki::main not met:
query: REPLACE INTO `objectcache` (keyname,value,exptime) VALUES ('X')
TransactionProfiler.php line 307 calls wfBacktrace()
TransactionProfiler.php line 200 calls TransactionProfiler->reportExpectationViolated()
Database.php line 1035 calls TransactionProfiler->recordQueryCompletion()
Database.php line 2786 calls DatabaseBase->query()
DatabaseMysqlBase.php line 442 calls DatabaseBase->nativeReplace()
SqlBagOStuff.php line 344 calls DatabaseMysqlBase->replace()
SqlBagOStuff.php line 364 calls SqlBagOStuff->setMulti()
BagOStuff.php line 393 calls SqlBagOStuff->set()
BagOStuff.php line 250 calls BagOStuff->add()
BagOStuff.php line 317 calls BagOStuff->lock()
MessageCache.php line 690 calls BagOStuff->getScopedLock()
MessageCache.php line 386 calls MessageCache->getReentrantScopedLock()
MessageCache.php line 315 calls MessageCache->loadFromDBWithLock()
MessageCache.php line 909 calls MessageCache->load()
MessageCache.php line 828 calls MessageCache->getMsgFromNamespace()
MessageCache.php line 766 calls MessageCache->getMessageFromFallbackChain()
Message.php line 1146 calls MessageCache->get()
Message.php line 769 calls Message->fetchMessage()
Message.php line 897 calls Message->toString()
SpecialUserlogin.php line 201 calls Message->escaped()
SpecialUserlogin.php line 270 calls LoginForm->load()
SpecialPage.php line 384 calls LoginForm->execute()
SpecialPageFactory.php line 553 calls SpecialPage->run()
MediaWiki.php line 249 calls SpecialPageFactory::executePath()
MediaWiki.php line 682 calls MediaWiki->performRequest()
MediaWiki.php line 476 calls MediaWiki->main()
index.php line 41 calls MediaWiki->run()

[MessageCache] MessageCache::load: Loading de... local cache is empty, global cache is expired/volatile, loading from database
Unstubbing $wgLang on call of $wgLang::getMessageFromDB from ExtArrays::init
[fatal] [51a97f60] PHP Fatal Error: Cannot redeclare class QuickTemplate
#0 [internal function]: MWExceptionHandler::handleFatalError()
#1 {main}