FYI - The error was caused by me not typing the NaviServer start command line properly.
Here is the correct command:
sudo /usr/local/ns/bin/nsd -t /usr/local/ns/config-5-9.tcl -u nsadmin -g nsadmin -b xxx.yyy.a.ccc:80,xxx.yyy.a.ccc:443
Notice no space between the port 80 and the command.
I had a space between the port and the comma that was causing the problem.
proper ;80,xxx
not proper: ;80 ,xxx
