Error when running Selenium Server via Nightwatch

问题

I'm attempting to run a simple test script. But I receive the following error:

I have my nightwatch config file setup as so:

nightwatch.conf.js

module.exports = {
  "src_folders": [
    "tests"// Where you are storing your Nightwatch e2e/UAT tests
  ],
  "output_folder": "./reports", // reports (test outcome) output by nightwatch
  "selenium": { 
    "start_process": true, // tells nightwatch to start/stop the selenium process
    "server_path": "./node_modules/selenium-standalone/.selenium/selenium-server/2.53.1-server.jar",
    "host": "127.0.0.1",
    "port": 4444, // standard selenium port
    "cli_args": {       "webdriver.chrome.driver" : "./node_modules/selenium-standalone/.selenium/chromedriver/2.25-x64-chromedriver"
    }
  },
  "test_settings": {
    "default": {
      "screenshots": {
        "enabled": true, // if you want to keep screenshots
        "path": './screenshots' // save screenshots here
      },
      "globals": {
        "waitForConditionTimeout": 5000 // sometimes internet is slow so wait.
      },
      "desiredCapabilities": { // use Chrome as the default browser for tests
        "browserName": "chrome"
      }
    },
    "chrome": {
      "desiredCapabilities": {
        "browserName": "chrome",
        "javascriptEnabled": true // set to false to test progressive enhancement
      }
    }
  }
}

guinea-pig.js

module.exports = { // addapted from: https://git.io/vodU0
  'Guinea Pig Assert Title': function(browser) {
    browser
      .url('https://saucelabs.com/test/guinea-pig')
      .waitForElementVisible('body')
      .assert.title('I am a page title - Sauce Labs')
      .saveScreenshot('ginea-pig-test.png')
      .end();
  }
};

The server path and chromedriver path are accurate and the most recent copy. I also have the latest version of chrome installed. Can someone please help me understand what could be the problem? Thanks!

Edit: I've also restarted the whole computer, same issue.

回答1:

Try using the latest version of the Selenium standalone server v.3.0.1

If that doesn't work, then you can upgrade your chromedriver to the latest version and test. You can find the different versions here:

https://chromedriver.storage.googleapis.com/index.html

Also make sure you are using the most recent version of Nightwatch v0.9.9 and update it in you package.json file.

回答2:

It is written very clear , your chrome version is lower than what chromedriver needs, just update your chrome to the latest version

来源：https://stackoverflow.com/questions/40454321/error-when-running-selenium-server-via-nightwatch