Just installed version 3.0 in my testsystem and got first error after one minute...
The service mvo_contao_facebook.listener.contao_cron_listener should be public.
Because it's called via contao/config.php
I guess also mvo_contao_facebook.listener.database_update should be public.
For mvo_contao_facebook.datacontainer.facebook_node I'm not sure how it's exactly called via contao.
Just installed version 3.0 in my testsystem and got first error after one minute... The service
mvo_contao_facebook.listener.contao_cron_listener
should be public. Because it's called via contao/config.phpI guess also
mvo_contao_facebook.listener.database_update
should be public. Formvo_contao_facebook.datacontainer.facebook_node
I'm not sure how it's exactly called via contao.