Me aparece este mensaje de error...
Get:11 https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/3.6/multiverse amd64 Packages [4,030 B]
Fetched 11.1 kB in 1s (11.9 kB/s)
Reading package lists... Done
W: https://repo.mongodb.org/apt/ubuntu/dists/bionic/mongodb-org/3.6/Release.gpg: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details.
W: GPG error: https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/3.6 Release: The following signatures were invalid: EXPKEYSIG 58712A2291FA4AD5 MongoDB 3.6 Release Signing Key <packaging@mongodb.com>
root@adm12:~#
Alguien sabe qué puede ser?