MediaWiki internal error.

Original exception: [c0bf0321908c649f3b5279a4] /index.php?title=%E6%94%BE%E6%98%A0%E5%8E%85:%E7%B1%B3%E5%B0%94%E7%A7%91%E7%BB%B4%E5%BE%B7%E4%B9%8B%E6%88%98&oldid=77725 Wikimedia\Assert\PostconditionException: Postcondition failed: makeTitleSafe() should always return a Title for the text returned by getRootText().
Backtrace:
from /var/www/html/vendor/wikimedia/assert/src/Assert.php(203)
#0 /var/www/html/includes/title/Title.php(1998): Wikimedia\Assert\Assert::postcondition(boolean, string)
#1 /var/www/html/extensions/Popups/includes/PopupsContext.php(249): MediaWiki\Title\Title->getRootTitle()
#2 /var/www/html/extensions/Popups/includes/PopupsHooks.php(187): Popups\PopupsContext->isTitleExcluded(MediaWiki\Title\Title)
#3 /var/www/html/includes/HookContainer/HookContainer.php(161): Popups\PopupsHooks->onBeforePageDisplay(MediaWiki\Output\OutputPage, MediaWiki\Skins\Vector\SkinVectorLegacy)
#4 /var/www/html/includes/HookContainer/HookRunner.php(938): MediaWiki\HookContainer\HookContainer->run(string, array, array)
#5 /var/www/html/includes/Output/OutputPage.php(2942): MediaWiki\HookContainer\HookRunner->onBeforePageDisplay(MediaWiki\Output\OutputPage, MediaWiki\Skins\Vector\SkinVectorLegacy)
#6 /var/www/html/includes/MediaWiki.php(978): MediaWiki\Output\OutputPage->output(boolean)
#7 /var/www/html/includes/MediaWiki.php(613): MediaWiki->main()
#8 /var/www/html/index.php(50): MediaWiki->run()
#9 /var/www/html/index.php(46): wfIndexMain()
#10 {main}

Exception caught inside exception handler: [c0bf0321908c649f3b5279a4] /index.php?title=%E6%94%BE%E6%98%A0%E5%8E%85:%E7%B1%B3%E5%B0%94%E7%A7%91%E7%BB%B4%E5%BE%B7%E4%B9%8B%E6%88%98&oldid=77725 Wikimedia\Assert\PostconditionException: Postcondition failed: makeTitleSafe() should always return a Title for the text returned by getRootText().
Backtrace:
from /var/www/html/vendor/wikimedia/assert/src/Assert.php(203)
#0 /var/www/html/includes/title/Title.php(1998): Wikimedia\Assert\Assert::postcondition(boolean, string)
#1 /var/www/html/extensions/Popups/includes/PopupsContext.php(249): MediaWiki\Title\Title->getRootTitle()
#2 /var/www/html/extensions/Popups/includes/PopupsHooks.php(187): Popups\PopupsContext->isTitleExcluded(MediaWiki\Title\Title)
#3 /var/www/html/includes/HookContainer/HookContainer.php(161): Popups\PopupsHooks->onBeforePageDisplay(MediaWiki\Output\OutputPage, MediaWiki\Skins\Vector\SkinVectorLegacy)
#4 /var/www/html/includes/HookContainer/HookRunner.php(938): MediaWiki\HookContainer\HookContainer->run(string, array, array)
#5 /var/www/html/includes/Output/OutputPage.php(2942): MediaWiki\HookContainer\HookRunner->onBeforePageDisplay(MediaWiki\Output\OutputPage, MediaWiki\Skins\Vector\SkinVectorLegacy)
#6 /var/www/html/includes/exception/MWExceptionRenderer.php(188): MediaWiki\Output\OutputPage->output()
#7 /var/www/html/includes/exception/MWExceptionRenderer.php(105): MWExceptionRenderer::reportHTML(Wikimedia\Assert\PostconditionException)
#8 /var/www/html/includes/exception/MWExceptionHandler.php(134): MWExceptionRenderer::output(Wikimedia\Assert\PostconditionException, integer)
#9 /var/www/html/includes/exception/MWExceptionHandler.php(251): MWExceptionHandler::report(Wikimedia\Assert\PostconditionException)
#10 /var/www/html/includes/MediaWiki.php(632): MWExceptionHandler::handleException(Wikimedia\Assert\PostconditionException, string)
#11 /var/www/html/index.php(50): MediaWiki->run()
#12 /var/www/html/index.php(46): wfIndexMain()
#13 {main}