[metrics-alerts] Cron <onionoo at onionoo-backend-03> /srv/onionoo.torproject.org/onionoo/monitoring/services/onionoo

[Cron Daemon]

Traceback (most recent call last):
  File "/srv/onionoo.torproject.org/onionoo/monitoring/services/onionoo", line 7, in <module>
    from prometheus_client import CollectorRegistry, Gauge, write_to_textfile
ModuleNotFoundError: No module named 'prometheus_client'