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How to kill something running in a specific port?

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  • author: #alex

While starting the app, you might get an error similar to this:

2020-09-14T09:52:16.044Z - error: 
2020-09-14T09:52:16.044Z - error:  -> Are you deploying on a platform that requires an explicit hostname, like OpenShift?
2020-09-14T09:52:16.045Z - error:     (Try setting the `explicitHost` config to the hostname where the server will be accessible.)
2020-09-14T09:52:16.045Z - error:     (e.g. `mydomain.com` or ``)

In this case kill the port from terminal and try again:

command to kill a port(1337 here) in mac is this:
sudo lsof -t -i tcp:1337 | xargs kill -9

For windows and linux machines, refer this thread: https://stackoverflow.com/questions/3855127/find-and-kill-process-locking-port-3000-on-mac