I too getting same error. My framework protractor with Jasmine. I request Shivan Bharadwaj, please share working capabilitis?
[13:58:31] I/launcher - Running 1 instances of WebDriver [13:58:31] I/hosted - Using the selenium server at http://BALAJI80:3f3ae09d-5d8a-4fe0-bcd9-be3ac455e56d@api.kobiton.com/wd/hub [13:59:25] E/runner - Unable to start a WebDriver session. [13:59:26] E/launcher - Error: UnsupportedOperationError: Not implemented yet for script. at Object.checkLegacyResponse (C:\Users\s7353264\AppData\Roaming\npm\node_modules\protractor\node_modules\selenium-webdriver\lib\error.js:546:15)