Using an existing browser for Robots

Hello everyone! I am trying to run the example robot to attach to a browser that was started on port 9222 (based on this article: How to use an already running (Chrome) browser for your web automation robots). I started the Chrome browser using the start command in the command window, however, when I run the robot, I get the error listed below.

Task(s) failed: Task Attach to running Chrome Browser and execute Google search failed with: WebDriverException: Message: unknown error: cannot connect to chrome at localhost:9222
from chrome not reachable

I have also received another error at times, a Permission error indicating that the robot cannot access the webchromebrowser.exe that was installed at run time in my AppData/Local/robocorp folder.

Does anyone have any suggestions for what I might be doing wrong? Thanks for any help that you can provide!