Port 5001 is not open on localhost, could not start functions emulator.

[nazreen]

when running npm run serve-h

[nazreen]

firebase/firebase-tools#1605

[nazreen]

installing firebase-tools version 7.2.3 does not work as recommended by the above linked thread

[nazreen]

installing latest version 7.8.1 does not work either

[nazreen]

tried the below:

after version update, run (if Mac):
sed -i '' 's/stopPort: port/stopPort: port+1/' /usr/local/lib/node_modules/firebase-tools/lib/emulator/controller.js

make sure it's the right path for the global node_modules by checking npm root -g

did not solve

[nazreen]

just run in on a different port.

this issue might have been local to me.

solution: add flag to usual command like so npm run serve-h -- --port=5003

[nazreen]

@lilsweetcaligula did you ever run into this issue? I just experienced it just now

[lilsweetcaligula]

@nazreen The error message looks oddly familiar but I cannot recall the exact circumstances under which I may have seen it. But my guess is - if running on a different port does resolve the problem, then it's probably the problem of a port being occupied - very likely by another instance of Firebase.