EXPKEYSIG debian ubuntu

Fix EXPKEYSIG ABF5BD827BD9BF62

nginx signing key <signing-key@nginx.com> — by NGINX

Official Key Page: https://nginx.org/en/linux_packages.html
Error message 
EXPKEYSIG ABF5BD827BD9BF62 nginx signing key <signing-key@nginx.com>

Your distro

Fix commands for Fedora

Method 1 Import from official URL

Imports the GPG key directly from the vendor and refreshes the package cache.

Fedora — bash
$ sudo rpm --import https://nginx.org/keys/nginx_signing.key
$ sudo dnf check-update
Official documentation

Method 2 Import from keyserver via GnuPG

Fetches the key from a public keyserver, exports it in ASCII armor format, then imports into the RPM database.

Fedora — bash
$ gpg --keyserver hkps://keys.openpgp.org --recv-keys ABF5BD827BD9BF62
$ gpg --export --armor ABF5BD827BD9BF62 | sudo rpm --import -
$ sudo dnf check-update

After importing the key

Run sudo apt-get update (or your distro's equivalent) again. If successful you should see Hit: lines with no EXPKEYSIG warnings. Still broken? Check that your /etc/apt/sources.list.d/ entry references the correct [signed-by=…] keyring path.