Carlos,
There is no network.conf in the plasticscm-server-core tar.gz as far as I can tell. The plastic.debug.log.txt file has this line in it and if need be I can post the entire thing.
2021-06-15 16:08:53,717 Main-1 DEBUG NetworkConfiguration - Can't find network configuration file: '/opt/plasticscm5/server/network.conf'
Thanks