Mozilla Extensions Stopped Working?

Question

Mozilla Firefox

Ubuntu 18.04 x64 system
Version 62.0b6 (64-bit)
Until yesterday (July 6th) all extensions worked fine.
As soon as I logged into the Pocket account in the evening (register in it using a mozilla account), and limit the request for Microphone Location and Notifications to sites, all extensions in the browser stopped working for me ( Not long before that, I did apt-get update/upgrade ).
Going into the extension section, it was clear that each plugin was disabled, and you could only delete it, there was no activation button.
When I tried to download any plugin from Mozilla's site, I got the message the addon downloaded from this site could not be installed because it appears to be corrupt
Googling a very meager information on this topic, they suggested changing one of the .xpin fields from true to false in about: config.
But this miracle did not help.
Having completely removed the browser ( ~/.mozilla/ , /etc/... , /usr/... ) from these folders and naturally apt get purge mozilla
Installed it again, and without entering the profile tried to install the plugin, but without success.
p.s. don't know what other information to provide.
pss maybe you can somehow look at which packages were updated during the slop upgrade yesterday, but I don’t know how to do this