Since a few days almost all screenshots are failing. A lot of screenshots are created with the text 'domain.xxx doesn't support a secure connection'. Anyone knows if there is somewhere a log to explore for the screenshot functionality?
I also see that those images are massively cached in the browser. Often there is already an update which not displays in the browser unless I clear my cache or do a manual reload of the image file in a new tab.
Edit: of course those sites have a valid Let's encrypt certificate and are normally accessible in the browser.