Headless chrome: chrome not reachable

I am using Chrome headless to run the protractor test. It runs for a while but after that i get the following error.

[15:36:30] E/launcher - chrome not reachable (Session info: headless chrome=59.0.3071.115) (Driver info: chromedriver=2.30.477690 (c53f4ad87510ee97b5c3425a14c0e79780cdf262),platform=Mac OS X 10.11.6 x86_64) (WARNING: The server did not provide any stacktrace information) Command duration or timeout: 5 milliseconds Build info: version: '3.4.0', revision: 'unknown', time: 'unknown'

The configuration is as shown below.

 capabilities: {
    'browserName': 'chrome',
    'chromeOptions': {
      'args': ['headless', 'disable-gpu']
    }

Tests run fine when i run without the 'headless' args.