All of My Decks are Gone/Restoration Is Blocked

[abdo]

The first error message is caused by the Advanced Browser add-on. You may have to disable it.
See When problems occur - Frequently Asked Questions

Regarding the second error, this could be relevant:

Unable to open Anki

you have installed an older version of anki while your collection is for a newer version. install the previous version of anki that you had from here (you can install the latest beta/alpha version if you don’t know which version you had installed from here ) when you installed the latest version, go to “File -> Switch profile” and press “Downgrade and quit” then install the version that you want to use. it should solve the problem