The problem seems to boil down to this error:
Oct 14 15:21:54 Server NetworkManager[1067]: ifcfg-rh: parsing /etc/sysconfig/network-scripts/ifcfg-wlp3s0 ...
Oct 14 15:21:54 Server NetworkManager[1067]: ifcfg-rh: error: Invalid mode 'ap' (not 'Ad-Hoc', 'Managed', or 'Auto')