EADDRINUSE error when trying to run grunt serve a second time

Issue

• When trying to develop locally, running grunt serve a second time results in the following error message:

uncaughtException: { [Error: listen EADDRINUSE 0.0.0.0:8001]
      code: 'EADDRINUSE',
      errno: 'EADDRINUSE',
      syscall: 'listen',
      address: '0.0.0.0',
      port: 8001 }