Snap-confine has elevated permissions and is not confined but should be. Refusing to continue to avoid permission escalation attacks

I have been using snap for some time but after a recent upgrade, I get this error when I try opening any application

Snap-confine has elevated permissions and is not confined but should be.
Refusing to continue to avoid permission escalation attacks

I have tried various fixes but it keeps getting worse. Any idea on what I should do?

I also tried sudo apt purge snapd snap-confine && sudo apt install -y snapd but when I try opening pycharm-community, it doesn't do anything.

This worked for me

service snapd.apparmor start 

(It needs the root.)

sudo apparmor_parser -r /etc/apparmor.d/*snap-confine*
sudo apparmor_parser -r /var/lib/snapd/apparmor/profiles/snap-confine*

Fixes it. No restart required.