Executing: gpg --ignore-time-conflict

HI, I want to install mariadb in ubuntu server 12.04, but i get this error

Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --secret-keyring ....
gpg: requesting key 1BB943DB from hkp server keyserver.ubuntu.com
gpg: key 1BB943DB: "MariaDB Package Signing Key <package-signing-key@mariadb.org>" imported
gpg: no ultimately trusted keys found
gpg: Total number processed: 1
gpg:               imported: 1

when I use this following command :

apt-key adv --recv-keys --keyserver hkp://keyserver.ubuntu.com:80 0xcbcb082a1bb943db

I tried to create a file with full key : 1993 69E5 404B D5FC 7D2F E43B CBCB 082A 1BB9 43DB but i got gpg:no valid openPGP data found.

kind regards

Answer Answered by Ian Gilfillan in this comment.

That is a warning, not an error, so it should work fine. See https://help.ubuntu.com/community/SecureApt#The_Web_of_Trust for details on why it appears.

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