I have the latest version
That is really strange, considering many have confirmed this resolved their problem.
This should be addressed in the link I gave or possibly better in its own new topic (so it doesn't get buried in that large topic) and note that it is avast version.
That said, looking back at your earlier post again, I don't know if using the firefox FF67 beta7 is the issue. As far as I'm aware, only regular release versions of browsers are supported.