GPG error apt.myvestacp.com signatures couldn't be verified, public key is not available NO_PUBKEY 88807D4B2221338C

[myVesta]

Announcement:

Our GPG key for APT repo has expired on 12-jul-2021, and if your server is installed before that date, it can't receive myVesta updates from our apt repo.

So, If you ran apt update and if you saw this in console:

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W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://apt.myvestacp.com/buster buster InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 88807D4B2221338C
W: Failed to fetch http://apt.myvestacp.com/buster/dists/buster/InRelease  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 88807D4B2221338C
W: Some index files failed to download. They have been ignored, or old ones used instead.

then:

Solution:
In your SSH, as 'root', run:

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wget https://apt.myvestacp.com/deb_signing.key -O deb_signing.key
sudo apt-key add deb_signing.key

It will download new GPG key, and you will be able to update myVesta:

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sudo apt-get update
sudo apt-get -y install vesta

[droopy]

Thanks!

Solved

[webxtek]

thanks <3

[zangedsu]

Hey!
Did everything according to the instructions, but after entering the command sudo apt-key add deb_signing.key
I get the error "Does not contain PGP content"
How do I update my panel?

[myVesta]

Hey!
Did everything according to the instructions, but after entering the command sudo apt-key add deb_signing.key
I get the error "Does not contain PGP content"
How do I update my panel?

copy-paste whole console output here.

[masoudadm]

root@web:~# sudo apt-key add deb_signing.key
Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8)).
OK
then i run apt update
and

root@web:~# sudo apt-get -y install vesta
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package vesta
root@web:~#

[myVesta]

root@web:~# sudo apt-key add deb_signing.key
Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8)).
OK
then i run apt update
and

root@web:~# sudo apt-get -y install vesta
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package vesta
root@web:~#

Obviously, you didn't install myVesta at all.
This tutorial is for the servers that already have installed myVesta.