Hi ! I'm not on Ubuntu but I had the same problem since yesterday on windows with Firefox too ! I found the solution with the fonction "refresh Firefox" ! https://support.mozilla.org/en-US/kb/refresh-firefox-reset-add-ons-and-settings
Hi ! I'm not on Ubuntu but I had the same problem since yesterday on windows with Firefox too ! I found the solution with the fonction "refresh Firefox" ! https:/ /support. mozilla. org/en- US/kb/refresh- firefox- reset-add- ons-and- settings