time="18-03-2021 22:36:53" level=info msg="loading acquisition file : /etc/crowdsec/acquis.yaml"
time="18-03-2021 22:36:53" level=info msg="[file datasource] opening file '/var/log/secure'"
time="18-03-2021 22:36:53" level=info msg="[file datasource] opening file '/var/log/messages'"
time="18-03-2021 22:36:53" level=info msg="[file datasource] opening file '/var/log/maillog'"
time="18-03-2021 22:36:53" level=warning msg="while configuring datasource : empty filename(s) and journalctl filter, malformed datasource"
The three datasource files all exist and contain content. Why the warning?