Web App No Longer Runs on MacOS After Deployment to Cloud

The web app that I’m developing got to the point where it was time to try is on Xojo Cloud. It had been working on MacOS and works fine on Xojo Cloud too.

But now it no long launches on MacOS. It compiles fine, but when I do ./theApp it never launches and dies silently. I looked in the system logs for clues, but found none. Where else might I look? And is this a known problem?

My immediate guess is that the selected port is already in use. Try changing the port in the IDE or setting it on the command line with the --port option.

Port already in used appears to have been the problem. Thanks much.