Ahh! Then this is a timeout issue. The ui.vision.html page gets loaded but the browser and RPA extension is not ready in time => the ui.vision.html page can not connect to the extension and thus reports a timeout. These are the #203 and #204 errors.
Workaround: In your CLI script if you start the browser by itself and then pause for 3-10 seconds and then start the macro you won’t have this issue as well as some others. (batch file example code here)