MediaWiki internal error.

Original exception: [ZgWWuZ8D-vNcK2K9AtNZlAAAAAE] /index.php?title=:Tome01-Page271&diff=prev&oldid=22863 Wikimedia\Assert\PostconditionException from line 202 of /home/clients/5f734159e7b1d1bd2b140e6163ffda9c/sites/christ-roi.net/vendor/wikimedia/assert/src/Assert.php: Postcondition failed: makeTitleSafe() should always return a Title for the text returned by getRootText().
Backtrace:
#0 /home/clients/5f734159e7b1d1bd2b140e6163ffda9c/sites/christ-roi.net/includes/Title.php(1995): Wikimedia\Assert\Assert::postcondition(boolean, string)
#1 /home/clients/5f734159e7b1d1bd2b140e6163ffda9c/sites/christ-roi.net/includes/skins/Skin.php(480): Title->getRootTitle()
#2 /home/clients/5f734159e7b1d1bd2b140e6163ffda9c/sites/christ-roi.net/includes/OutputPage.php(3128): Skin->getPageClasses(Title)
#3 /home/clients/5f734159e7b1d1bd2b140e6163ffda9c/sites/christ-roi.net/includes/skins/SkinTemplate.php(405): OutputPage->headElement(SkinVector)
#4 /home/clients/5f734159e7b1d1bd2b140e6163ffda9c/sites/christ-roi.net/includes/skins/SkinTemplate.php(127): SkinTemplate->prepareQuickTemplate()
#5 /home/clients/5f734159e7b1d1bd2b140e6163ffda9c/sites/christ-roi.net/includes/skins/SkinTemplate.php(144): SkinTemplate->generateHTML()
#6 /home/clients/5f734159e7b1d1bd2b140e6163ffda9c/sites/christ-roi.net/includes/OutputPage.php(2622): SkinTemplate->outputPage()
#7 /home/clients/5f734159e7b1d1bd2b140e6163ffda9c/sites/christ-roi.net/includes/MediaWiki.php(952): OutputPage->output(boolean)
#8 /home/clients/5f734159e7b1d1bd2b140e6163ffda9c/sites/christ-roi.net/includes/MediaWiki.php(965): MediaWiki->{closure}()
#9 /home/clients/5f734159e7b1d1bd2b140e6163ffda9c/sites/christ-roi.net/includes/MediaWiki.php(548): MediaWiki->main()
#10 /home/clients/5f734159e7b1d1bd2b140e6163ffda9c/sites/christ-roi.net/index.php(53): MediaWiki->run()
#11 /home/clients/5f734159e7b1d1bd2b140e6163ffda9c/sites/christ-roi.net/index.php(46): wfIndexMain()
#12 {main}

Exception caught inside exception handler: [ZgWWuZ8D-vNcK2K9AtNZlAAAAAE] /index.php?title=:Tome01-Page271&diff=prev&oldid=22863 Wikimedia\Assert\PostconditionException from line 202 of /home/clients/5f734159e7b1d1bd2b140e6163ffda9c/sites/christ-roi.net/vendor/wikimedia/assert/src/Assert.php: Postcondition failed: makeTitleSafe() should always return a Title for the text returned by getRootText().
Backtrace:
#0 /home/clients/5f734159e7b1d1bd2b140e6163ffda9c/sites/christ-roi.net/includes/Title.php(1995): Wikimedia\Assert\Assert::postcondition(boolean, string)
#1 /home/clients/5f734159e7b1d1bd2b140e6163ffda9c/sites/christ-roi.net/includes/skins/Skin.php(480): Title->getRootTitle()
#2 /home/clients/5f734159e7b1d1bd2b140e6163ffda9c/sites/christ-roi.net/includes/OutputPage.php(3128): Skin->getPageClasses(Title)
#3 /home/clients/5f734159e7b1d1bd2b140e6163ffda9c/sites/christ-roi.net/includes/skins/SkinTemplate.php(405): OutputPage->headElement(SkinVector)
#4 /home/clients/5f734159e7b1d1bd2b140e6163ffda9c/sites/christ-roi.net/includes/skins/SkinTemplate.php(127): SkinTemplate->prepareQuickTemplate()
#5 /home/clients/5f734159e7b1d1bd2b140e6163ffda9c/sites/christ-roi.net/includes/skins/SkinTemplate.php(144): SkinTemplate->generateHTML()
#6 /home/clients/5f734159e7b1d1bd2b140e6163ffda9c/sites/christ-roi.net/includes/OutputPage.php(2622): SkinTemplate->outputPage()
#7 /home/clients/5f734159e7b1d1bd2b140e6163ffda9c/sites/christ-roi.net/includes/exception/MWExceptionRenderer.php(153): OutputPage->output()
#8 /home/clients/5f734159e7b1d1bd2b140e6163ffda9c/sites/christ-roi.net/includes/exception/MWExceptionRenderer.php(65): MWExceptionRenderer::reportHTML(Wikimedia\Assert\PostconditionException)
#9 /home/clients/5f734159e7b1d1bd2b140e6163ffda9c/sites/christ-roi.net/includes/exception/MWExceptionHandler.php(106): MWExceptionRenderer::output(Wikimedia\Assert\PostconditionException, integer)
#10 /home/clients/5f734159e7b1d1bd2b140e6163ffda9c/sites/christ-roi.net/includes/exception/MWExceptionHandler.php(185): MWExceptionHandler::report(Wikimedia\Assert\PostconditionException)
#11 /home/clients/5f734159e7b1d1bd2b140e6163ffda9c/sites/christ-roi.net/includes/MediaWiki.php(581): MWExceptionHandler::handleException(Wikimedia\Assert\PostconditionException, string)
#12 /home/clients/5f734159e7b1d1bd2b140e6163ffda9c/sites/christ-roi.net/index.php(53): MediaWiki->run()
#13 /home/clients/5f734159e7b1d1bd2b140e6163ffda9c/sites/christ-roi.net/index.php(46): wfIndexMain()
#14 {main}