Best Fixes
Identify which process owns the port, then stop or reconfigure it if appropriate.
If both services are needed, move one of them to a different port.
Error Fix
How to Fix 'Address already in use'
A practical approach when an app fails because the requested port is already occupied.
This error appears when another process is already bound to the port your application wants. The fix is usually stopping the conflicting process or choosing a different port.
Avoid This
Do not kill processes without confirming they are safe to stop.
Do not hardcode a new port everywhere until you know whether the conflict is temporary or expected.
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