ERROR: The command 'foreman start"

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ERROR: The command 'foreman start"

19:20:41 frontend.1 | error when starting dev server: 
19:20:41 frontend.1 | Error: Port 3036 is already in use 
19:20:41 frontend.1 |  at Server.onError

SOLUTION:
$ lsof -wni tcp:3036
$ sudo kill -9 PID


REFERENCE:

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