post_upgrade() {
cat << __EOF__

*** Warning: ***

In order to uniformize all jitsi-meet package, we have changes the directory from "/opt/jitsi-meet" to "/usr/share/webapps/jitsi-meet". The config files is located in "/etc/webapps/jitsi-meet".

Please compare your old config with the new one and apply the changes. Do not blindy copy your old config!

__EOF__
}