When running apt-get update you see the following error message:
The following signatures were invalid: EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic Signing Key [email protected]
Fetched 263 kB in 2s (170 kB/s)
Reading package lists… Done
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: Index of /php/ buster InRelease: The following signatures were invalid: EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic Signing Key [email protected]W: Failed to fetch https://packages.sury.org/php/dists/buster/InRelease The following signatures were invalid: EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic Signing Key [email protected]
W: Some index files failed to download. They have been ignored, or old ones used instead.
To fix the issue:
apt-key adv --fetch-keys ‘https://packages.sury.org/php/apt.gpg’ > /dev/null 2>&1