Want to add a few extra keys but how to overcome this:
root@n1:~# ls -l /etc/pve/priv/authorized_keys
-rw------- 1 root www-data 2724 Sep 4 12:38 /etc/pve/priv/authorized_keys
root@n1:~# chmod u+w /etc/pve/priv/authorized_keys
chmod: changing permissions of â: Function not implemented
root@n1:~# ls -l /etc/pve/priv/authorized_keys
-rw------- 1 root www-data 2724 Sep 4 12:38 /etc/pve/priv/authorized_keys
root@n1:~# chmod u+w /etc/pve/priv/authorized_keys
chmod: changing permissions of â: Function not implemented