Hello,
Thank for reporting this; we have found the cause of the issue and fixed it. It will get updated automatically, or if you do not want to wait or are experiencing issues, please run the Avast GUI and from Menu select [Avast Security] -> [Check for updates]. If work with the computer is problematic, please disable File Shield before checking for the update and enable it afterwards.
We apologise for the issue.
Kind regards,
Ondrej Kolacek