failed CRON-APT RUN after trying to install Java

Hello all,

yesterday I have tried to install Java on my OMV without Success.

The reason for this was that I was trying to setup a minecraft server but now I am using a Docker Container for that, so java is not needed anymore.

This morning I recieved a mail with the following text:

Quote

CRON-APT RUN [/etc/cron-apt/config]: Tue May 7 07:39:27 CEST 2024

CRON-APT SLEEP: 3482, Tue May 7 08:37:29 CEST 2024

CRON-APT ACTION: 0-update

CRON-APT LINE: /usr/bin/apt-get update -o quiet=2

W: GPG error: http://ppa.launchpad.net/webupd8team/java/ubuntu xenial InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY C2518248EEA14886

E: The repository 'http://ppa.launchpad.net/webupd8team/java/ubuntu xenial InRelease' is not signed.

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I just followed the following instruction (without success):

How To Install Oracle Java 8 In Debian Via Repository [JDK8]

The Oracle JDK License has changed for releases starting April 16, 2019. The new Oracle Technology Network License Agreement for Oracle J...

www.webupd8.org

echo "deb http://ppa.launchpad.net/webupd8team/java/ubuntu xenial main" | tee /etc/apt/sources.list.d/webupd8team-java.list
echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu xenial main" | tee -a /etc/apt/sources.list.d/webupd8team-java.list
apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys EEA14886
apt-get update
apt-get install oracle-java8-installer
exit

Any ideas how to fix the issue?