In progressNode process crashes on startup with EADDRINUSESomething else already has this exact port bound. The fix depends on whether that's a leftover instance of your own app or a different service that legitimately needs the port.
View the whole map (7 more steps)
Find out what's already using the port
Nothing is bound to that port right now
Is the process holding the port an old instance of this same app?
Fix: terminate the leftover process
Root cause: a different, legitimate service owns that port
Confirm the port is free and the app starts
Resolved
What to test
Node process crashes on startup with EADDRINUSE
Something else already has this exact port bound. The fix depends on whether that's a leftover instance of your own app or a different service that legitimately needs the port.