Error @wdio/runner: error: failed to create session.

Error:

@wdio/runner: error: failed to create session.

Explanation:

This error occurs when there is an issue while trying to create a session in the WebDriverIO runner. The session creation process is responsible for establishing a connection between the test script and the browser or device that will be used for automation.

Possible Causes:

• Incorrect configuration or missing details in the WebDriverIO configuration file (wdio.conf.js).
• Incorrect browser or device capabilities specified for the session.
• Issues with the WebDriverIO framework itself.
• Issues with the browser or device being used for automation.

Possible Solutions:

Here are some possible solutions for resolving this error:

1. Review the WebDriverIO configuration file (wdio.conf.js) and ensure that all necessary details such as browser name, browser version, platform, etc., are correctly configured.
2. Check if the browser or device capabilities specified in the configuration file are accurate and compatible with the test environment.
3. Update WebDriverIO and its dependencies to the latest version to ensure that any known bugs or issues are addressed.
4. If running tests on a local machine, ensure that the required browser and its respective driver (e.g., ChromeDriver for Chrome) are properly installed and accessible.
5. If running tests on a remote Selenium Grid or cloud-based service, verify that the grid or service is running correctly and accessible.

Example:

Here is an example of a WebDriverIO configuration file (wdio.conf.js) with correct setup for a Chrome browser:

    exports.config = {
  // ...
  capabilities: [
    {
      maxInstances: 1,
      browserName: 'chrome',
      acceptInsecureCerts: true
    }
  ],

  // ...
}
  

In the above example, the configuration specifies that the test will be executed on a Chrome browser with the capability to accept insecure certificates.