similar to #13418 ### Status: All Warnings in Matomo itself and the broken Twig rendering are fixed in Matomo 3.12. All remaining warnings depend on third-party libraries (see below). Soon PHP 7.4 will be released (RC 1 is planned or September 5th), so it would be great if Matomo would work mostly fine when it is released. I set up a Matomo instance using the latest beta4 at https://matomo-beta.lw1.at If you want to get access, just message me. Current status is that Matomo is nearly completly unusable as it renders invalid HTML with missing whitespaces: ```html <ul class="right hide-on-med-and-down"><li role="menuitem" class="active"><atitle="Zeige Webanalytik Berichte für Testsite." id="topmenu-corehome" href="index.php?module=CoreHome&action=index&idSite=1&period=day&date=yesterday" target="_self" tabindex="3">Dashboard</a></li><li role="menuitem" class=""><atitle="Vergleichen Sie Webanalytikstatistiken für alle Ihre Websites." id="topmenu-multisites" href="index.php?module=MultiSites&action=index&idSite=1&period=day&date=yesterday" target="_self" tabindex="3">Alle Websites</a></li><li role="menuitem" class=""><atitle="" id="topmenu-tagmanager" ``` This seem to be caused by a required change in Twig (https://github.com/twigphp/Twig/pull/3004/commits/1fb0f9701d8443083495cd2645e8a0c45d54c34d), so updating to twig 1.41.0 or later should solve this.