Ssh-add Could not add identity

Hi, I installed kdeneon recently.
I noticed that running ssh-add I get this error:

Could not add identity "/home/myuser/.ssh/id_rsa": agent refused operation

More info:

echo $SSH_AUTH_SOCK
/run/user/1000/gnupg/S.gpg-agent.ssh

As workaround I can run

eval $(ssh-agent -s)

but that works only on the current console.

From my understanding there’s a socket conflict.

What’s the best solution?

I found a solution that works for a single user in this topic:

With previous version of kde/plasma it wasn’t necessary such work around.