spooler and plugin message.

[thctlo]

I’m just configuring the kopano community 8.7.81 (.151)

I noticed this in the logs.
Thu Jun 13 13:46:11 2019: [=======] Starting kopano-spooler version 8.7.81 (pid 8750 uid 999)
Thu Jun 13 13:46:11 2019: [error ] Use of Python (plugin_enabled=yes) forces process_model=fork

what does the last line mean, error but its running fine?
Should this not be warning in place of error?

Just wondering what the meaning of this message is.