Running selenium test via JavaScript failing

[Deleted user]

I am trying to run some Selenium tests via BitBucket Pipelines with this configuration:

        script: # Modify the commands below to build your repository.
          - npm install
          - npm install -g gulp
          - npm install -g chromedriver
          - npm install -g selenium-webdriver
          - gulp mocha
          - gulp selenium

 All of these steps succeed except for the last one, where every one of my Selenium test fails with the same error:

Uncaught Error: Server terminated early with status 127 at Error (native) at earlyTermination.catch.e (node_modules/selenium-webdriver/remote/index.js:252:52) at process._tickCallback (internal/process/next_tick.js:103:7) From: Task: WebDriver.createSession() at Function.createSession (node_modules/selenium-webdriver/lib/webdriver.js:769:24) at Function.createSession (node_modules/selenium-webdriver/chrome.js:761:15) at createDriver (node_modules/selenium-webdriver/index.js:170:33) at Builder.build (node_modules/selenium-webdriver/index.js:642:16)...

Any suggestions?  Thank you.