getting a new error when opening new windows saying "Firefox is already running, but is not responding. To use Firefox, you must first close the existing Firefox process, restart your device, or use a different profile."
That's a bug in librewolf. A fixed version should appear soon (maybe today?):
https://codeberg.org/librewolf/issues/issues/1673#issuecomment-1347478
You can downgrade to version 119.0.1 (which does not have the bug) in the meantime if you don't want to wait.
Pinned Comments
lsf commented on 2021-11-10 12:14 (UTC) (edited on 2023-04-17 07:18 (UTC) by lsf)
https://wiki.archlinux.org/title/Arch_User_Repository#Acquire_a_PGP_public_key_if_needed
gpg --keyserver hkp://keyserver.ubuntu.com --search-keys 031F7104E932F7BD7416E7F6D2845E1305D6E801
/edit: starting with 112.0-1, the binaries are signed with the maintainers shared key, so
gpg --keyserver hkp://keyserver.ubuntu.com --search-keys 662E3CDD6FE329002D0CA5BB40339DD82B12EF16
should do the trick instead. I've also signed the key with the previously used key, so you have at least some guarantee that it's not a malicious attack :)