Signatures couldn't be verified

From past week i’m having trouble with the update. This is the error I get every time:
W: GPG error: Ubuntu Git Maintainers in Launchpad/ubuntu eoan InRelease: The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY A1715D88E1DF1F24
E: The repository ‘ eoan InRelease’ is not signed.
N: Updating from such a repository can’t be done securely, and is therefore disabled by default.

What’s in your /etc/apt/sources.list?

Well, the answer is here: Git stable releases : “Ubuntu Git Maintainers” team but I don’t understand why you are trying to load an Ubuntu PPA onto a Debian-based system.

This is the content:
-rw-r–r-- 1 root root 124 Jun 19 16:18 git-core-ubuntu-ppa-eoan.list
-rw-r–r-- 1 root root 112 Jun 19 16:18 nodesource.list
-rw-r–r-- 1 root root 112 Jun 19 16:18
In git-core-Ubuntu :
deb Index of /git-core/ppa/ubuntu eoan main

deb-src Index of /git-core/ppa/ubuntu eoan main

Honestly I don’t remember if I added it or not, and if, why😂

Then suggest to remove it to make your system working again :slight_smile: