SharePoint Server 2019 Issue: Empty / blank page e.g. settings or content page (viewlsts.aspx)
If you encounter a problem with an empty / blank page in SharePoint like in the screenshot - e.g. for the viewlsts.aspx page (_layouts/15/viewlsts.aspx) - then check you SharePoint Server patch status. Check if you have installed the KB5002034: October 12, 2021, update for SharePoint Server 2019 Language Pack If not install the update. After the installation everything should work again. For previous issues with the same impact see: Trending Issue: /_layouts/15/viewlsts.aspx shows as blank page in SP2019 after installing September PU