@1280dda4 You actually don't need to do wget first. See https://developer.chrome.com/blog/headless-chrome/
@c8a24274 Trying to open that link in Firefox leads to a delay of several seconds, then a 500 error. Oh look! Opening it in (incognito) Chrome works almost instantly!! Oh how I hate the modern web ... But thanks for the tips ... I may have found a different solution. More in a while.