A similar older post discusses this issue:
When clicking Lauch WEB reports, http 404 error is thrown - Reporting - BigFix Forum
The point made by @orbiton is correctly highlighted.
Here’s a small tip if you're trying to find which process is using a specific port:
netstat -ano | findstr :8083 –> Find the PID owning the port
tasklist /svc /FI "PID eq 12345" —> Identify the process linked to a PID