Hello, Here are some fixes to the problem : 1. '''Check Firefox's Built-in Shield''' go to the shield icon on the left of the address bar on the page with the problem, after that disable it, then refresh. 2. '''Use Firefox's Safe Mode''' click the 3-bar menu > Help > Troubleshoot Mode (or Restart with Add-ons Disabled) and click Restart. 3. '''Disable Extensions Manually''' disable each extension one by one till one works. If not, re enable all of them and proceed to the next fix. 4. '''Clear Cache & Cookies''' Go to '''about:preferences#content''' and clear cookies/site data for the problematic site, or try a hard refresh: '''Ctrl+Shift+R''' (Windows/Linux) or '''Command+Shift+R''' (Mac). 5. '''Refresh Firefox''' Click the 3-bar menu > Help > More Troubleshooting Information. Click the Refresh Firefox button to reset it to default, '''removing add-ons and extensions but keeping bookmarks/history. '''