Hello, since a few days I have the problem that Firefox does not load pages anymore. I am using the following configuration: Linux Mint 20.1 Cinnamon Firefox 89 uBlock Origin no other extensions or add-ons. The error is as follows: I start Firefox, the window appears. But instead of the start page I selected, an empty field appears and no page is loaded. If I enter an address manually and want to open it, nothing happens. The hamburger menu on the right-hand side can be opened, but if I click on settings (or another menu item), nothing happens. I have already tried the following: I started Firefox in the terminal in safe mode (no change). Called Firefox Profile via the terminal with Firefox -p and deleted it (no change). Uninstalled and reinstalled Firefox (no change) Deleted the cache. Can anyone give me a tip on what else I can test? Sorry for my bad english, it isn't my native language.