Ssh into base system to create dummy soundcard

I try to ssh into the host of my hassio install (create a dummy soundcard).

I followed these instructions:

However, when I try to access the host via <IP.adress>:22222 with my new private key, it seems I still log into hassio:

The result

hassio > Error: unknown command "journalctl" for "hassio-cli"

Run 'hassio-cli --help' for usage.

FATA[0000] Error while executing rootCmd: unknown command "journalctl" for "hass io-cli"

What Am I doing wrong?