Hello,
The message posited suggests that Tomcat may be inaccessible. It's important to keep in mind that access to port 8080 is being allowed as the site is returning a Service Desk related activity, albeit one that is in error. Running the above Tomcat reset (pdm_tomcat_nxd STOP/START) should correct the issue.
One can also verify port usage for 8080 by running:
netstat -ano | find "8080"
The PID that returns from this command can be cross checked for a Java related process that Tomcat is leveraging.