Installing the yarn package manager from its instruction I did add its key and some weeks ago the key was expired. so I did the apt-key add again. but still on sudo apt update I get the warning:
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://dl.yarnpkg.com/debian stable InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 4F77679369475BAA
W: Failed to fetch https://dl.yarnpkg.com/debian/dists/stable/InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 4F77679369475BAA
W: Some index files failed to download. They have been ignored, or old ones used instead.
sudo apt-key list shows that there are two keys where one is expired
pub rsa4096 2016-10-05 [SC]
72EC F46A 56B4 AD39 **** **** **** **** **** ****
uid [ unknown] Yarn Packaging <[email protected]>
sub rsa4096 2016-10-05 [E]
sub rsa4096 2019-01-02 [S] [expires: 2020-02-02]
How can I remove only the expired one?
Hy try this issue here, renewing the key to add the missing key mentioned in the error message.
How to fix missing GPG keys?
It's just the signing key changed if you still getting this error even in newer releases you should just add it manually via To add the latest key:
or