I'm marking this as also affecting me using Ubuntu 18.04 and Firefox 62. I don't ever see this problem with either Chrome or Chromium 69. Will look for upstream reports and link to anything relevant that I find later as bugzilla.mozilla.org horrendously slow at present.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1792402 Title: Intermittent Server Not Found To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1792402/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs