The following error can be resolved easily:
Service engine 'corosync_quorum' failed to load for reason 'configuration error: nodelist or quorum.expected_votes must be configured!'
The manual claims that you have to check your hosts file, but it does not explain fully what is needed. Make sure that the IP address of the node is listed in /etc/hosts with the hostname and pvelocalhost, like this:
127.0.0.1 localhost.localdomain localhost 10.0.6.46 full.hostname.com full pvelocalhost
Restart the corosync service afterwards:
systemctl restart corosync.service