I get the error shown below while browsing on Firefox. If this is not the right place, let me know; it says to contact the website owner.

As requested, the visible link in the screenshot is: How do the different propeller configurations compare for wind tunnel purposes? (Title has changed since.)

However, the post worked fine after trying again, and it didn't happen just the once (different posts/pages).

enter image description here

If it is not just a Firefox issue, feel free to update the tags.

  • Can you share roughly where you are in the world, if you use VPN or Tor and if possible which ISP you're using. Also OS and AntiVirus/Firewall software you use. If you can switch to a different network (mobile for example) do you experience the same issues?
    – rene
    Jan 30, 2019 at 7:20
  • 2
    I have the same problem, on Firefox only, regardless of the network (4G or wifi). No VPN/Tor/antivirus, I run macOS. I believe this isn’t a StackExchange issue, but some Firefox bug.
    – Diti
    Feb 6, 2019 at 19:02
  • 1
    Also quite sure this is a Firefox issue, I'm having the same problem on Firefox Desktop (and only on SO) but not on Firefox Mobile. This might be relevant: bugzilla.mozilla.org/show_bug.cgi?id=1528317#c13. At least it appears as if the Firefox people are working on it.
    – stakx
    Mar 24, 2019 at 10:18


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