Couldn't update Parrot, public key is not available/Waterfox

Hello there,

I followed some instructions to install Palemoon and Waterfox in Parrot, it went well with the first but it did not work for the latter due to an error in the public key ... Now I can not update the system and I do not know how to remove / purge this. ..

Quote:

#LANG=C apt update Ign:1 http://repo.vivaldi.com/stable/deb stable InRelease Hit:2 http://repo.vivaldi.com/stable/deb stable Release Hit:3 https://deb.parrot.sh/parrot rolling InRelease Hit:4 https://deb.parrot.sh/parrot rolling-security InRelease Hit:6 http://download.opensuse.org/reposit...ser/Debian_9.0 InRelease Get:7 http://download.opensuse.org/reposit...x/xUbuntu_Next InRelease [1585 B] Err:7 http://download.opensuse.org/reposit...x/xUbuntu_Next InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 5E62D791625A271E Reading package lists... Done W: GPG error: http://download.opensuse.org/reposit...x/xUbuntu_Next InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 5E62D791625A271E E: The repository 'http://download.opensuse.org/repositories/home:/hawkeye116477:/waterfox/xUbuntu_Next InRelease' is not signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. [][root@

Thanks for any idea ...

Forget to say that even when I removed it (repo) from Synaptic, it does not update the system.