Reported via OTRS

"Dear Support Team,When I click on "Download as PDF file", for some days now I almost only get the message that a "source code" could not be read and therefore saving is not possible."

I can reproduce this (using Firefox 83.0 on Win 8.1) with some articles, may longer ones, like https://de.wikipedia.org/wiki/Berliner_Mauer

Using Chrome a PDF is saved successfully but cannot be open by Acrobat