Best guess: maybe your Apache server already uses port 80? Please also check this answer: https://stackoverflow.com/questions/51721771/apache-openmeetings-4-0-4-csrf-attack-when-using-apache2-as-proxypass/51783235#51783235
[ Full content available at: https://github.com/apache/openmeetings/issues/7 ] This message was relayed via gitbox.apache.org for [email protected]
