EXPKEYSIG debian ubuntu

Fix EXPKEYSIG B188E2B695BD4743

DEB.SURY.ORG Automatic Signing Key <deb@sury.org> — by Ondřej Surý

Official Key Page: https://deb.sury.org/
Error message 
EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic Signing Key <deb@sury.org>

Your distro

Fix commands for Generic (GnuPG)

Method 1 GnuPG keyserver lookup

Fetches the key from a public keyserver using GnuPG. Works on any distro with gpg installed.

Generic (GnuPG) — bash
$ gpg --keyserver keyserver.ubuntu.com --recv-keys B188E2B695BD4743
$ gpg --list-keys B188E2B695BD4743
Official documentation

Method 2 Direct download

Downloads and imports the key file directly from the vendor.

Generic (GnuPG) — bash
$ curl -fsSL https://packages.sury.org/php/apt.gpg | gpg --import
Official documentation

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.