I tried my first upgrade today, to 1.11.0. I run
$ git fetch # Grab the latest code from the NodeBB Repository
$ git checkout v0.4.x # Type this as-is! Not v0.4.2 or v0.4.3, but "v0.4.x"!
$ git merge origin/v0.4.x
but when starting up it stops after a short while and the log gives:
2018-12-05T12:35:30.710Z [19247] - error: listen EADDRINUSE: address already in use 0.0.0.0:4567
Error: listen EADDRINUSE: address already in use 0.0.0.0:4567
at Server.setupListenHandle [as _listen2] (net.js:1294:14)
at listenInCluster (net.js:1342:12)
at doListen (net.js:1480:7)
at process.internalTickCallback (internal/process/next_tick.js:72:19) {"code":"EADDRINUSE","errno":"EADDRINUSE","syscall":"listen","address":"0.0.0.0","port":4567}
2018-12-05T12:35:30.710Z [19247] - info: [app] Shutdown (SIGTERM/SIGINT) Initialised.
3 restarts in 10 seconds, most likely an error on startup. Halting.
What setting has changed to give this?
Error: listen EADDRINUSE: address already in use 0.0.0.0:4567