ChromeDriver's DevToolsActivePort error

Description

Around the advent of Chrome v72 (around February/March 2019), the chromedriver project team started to split out their driver releases to match the target browser. One can observe the same from the project’s Download page:

Each major release of Chrome browser seems to be matched by a corresponding chromedriver. As such specific chromedriver needs to be used to match the target Chrome browser. As one upgrades or downgrades one’s Chrome browser, one would need to download the corresponding chromedriver. More explanation can be found in the Version Selection page.

What’s described above is a fairly recent change on the part of the chromedriver team. Nexial currently downloads the chromedriver automatically but without the consideration of the target Chrome browser. This could potentially lead to the wrong version of chromedriver being loaded and causing further issue - namely the infamous “DevToolsActivePort: file doesn't exist” error:

We are working on Nexial to improve the chromedriver download automation - stay tuned! In the meanwhile, please do the following to fix the above issue:

1. Check the version of your Chrome browser by type chrome://settings/help into the Location bar:
2. Open http://chromedriver.chromium.org/downloads and search for the matching version to download. For example, The above shows the available download for Chrome version 73.0.3683.68. Click on the link most appropriate to your operation system. If there isn’t a matching chromedriver available to download, find the one closest to your browser.
3. Unzip the downloaded chromedriver ZIP file. You should find the chromedriver file inside this zip file. Copy or move the chromedriver file to $USER_HOME/.nexial/chrome (for *NIX or MacOSX) or %USER_HOME%\.nexial\chrome (for Windows). USER_HOME refers to your HOME directory.
   • Make sure Nexial is running and no instances of chromedriver is running at this time. Otherwise the file-copy operation might fail.
4. After this, you may restart Nexial execution.