MediaWiki internal error.

Original exception: [bf1480b33dc3b4698bcddff0] /index.php?title=Category:%E0%AA%9F%E0%AB%82%E0%AA%82%E0%AA%95%E0%AB%80_%E0%AA%B5%E0%AA%BE%E0%AA%B0%E0%AB%8D%E0%AA%A4%E0%AA%BE&mobileaction=toggle_view_mobile TypeError: MediaWiki\Minerva\Menu\PageActions\PageActionsDirector::buildMenu(): Argument #1 ($toolbox) must be of type array, null given, called in /var/www/html/skins/MinervaNeue/includes/Skins/SkinMinerva.php on line 130
Backtrace:
from /var/www/html/skins/MinervaNeue/includes/Menu/PageActions/PageActionsDirector.php(71)
#0 /var/www/html/skins/MinervaNeue/includes/Skins/SkinMinerva.php(130): MediaWiki\Minerva\Menu\PageActions\PageActionsDirector->buildMenu()
#1 /var/www/html/skins/MinervaNeue/includes/Skins/SkinMinerva.php(195): MediaWiki\Minerva\Skins\SkinMinerva->getPageActions()
#2 /var/www/html/includes/skins/SkinMustache.php(58): MediaWiki\Minerva\Skins\SkinMinerva->getTemplateData()
#3 /var/www/html/includes/skins/SkinTemplate.php(150): SkinMustache->generateHTML()
#4 /var/www/html/includes/OutputPage.php(2807): SkinTemplate->outputPage()
#5 /var/www/html/includes/MediaWiki.php(926): OutputPage->output()
#6 /var/www/html/includes/MediaWiki.php(939): MediaWiki::{closure}()
#7 /var/www/html/includes/MediaWiki.php(563): MediaWiki->main()
#8 /var/www/html/index.php(53): MediaWiki->run()
#9 /var/www/html/index.php(46): wfIndexMain()
#10 {main}

Exception caught inside exception handler: [bf1480b33dc3b4698bcddff0] /index.php?title=Category:%E0%AA%9F%E0%AB%82%E0%AA%82%E0%AA%95%E0%AB%80_%E0%AA%B5%E0%AA%BE%E0%AA%B0%E0%AB%8D%E0%AA%A4%E0%AA%BE&mobileaction=toggle_view_mobile TypeError: MediaWiki\Minerva\Menu\PageActions\PageActionsDirector::buildMenu(): Argument #1 ($toolbox) must be of type array, null given, called in /var/www/html/skins/MinervaNeue/includes/Skins/SkinMinerva.php on line 130
Backtrace:
from /var/www/html/skins/MinervaNeue/includes/Menu/PageActions/PageActionsDirector.php(71)
#0 /var/www/html/skins/MinervaNeue/includes/Skins/SkinMinerva.php(130): MediaWiki\Minerva\Menu\PageActions\PageActionsDirector->buildMenu()
#1 /var/www/html/skins/MinervaNeue/includes/Skins/SkinMinerva.php(195): MediaWiki\Minerva\Skins\SkinMinerva->getPageActions()
#2 /var/www/html/includes/skins/SkinMustache.php(58): MediaWiki\Minerva\Skins\SkinMinerva->getTemplateData()
#3 /var/www/html/includes/skins/SkinTemplate.php(150): SkinMustache->generateHTML()
#4 /var/www/html/includes/OutputPage.php(2807): SkinTemplate->outputPage()
#5 /var/www/html/includes/exception/MWExceptionRenderer.php(157): OutputPage->output()
#6 /var/www/html/includes/exception/MWExceptionRenderer.php(76): MWExceptionRenderer::reportHTML()
#7 /var/www/html/includes/exception/MWExceptionHandler.php(107): MWExceptionRenderer::output()
#8 /var/www/html/includes/exception/MWExceptionHandler.php(202): MWExceptionHandler::report()
#9 /var/www/html/includes/MediaWiki.php(585): MWExceptionHandler::handleException()
#10 /var/www/html/index.php(53): MediaWiki->run()
#11 /var/www/html/index.php(46): wfIndexMain()
#12 {main}