Dash app troubleshooting

Issue:

Troubleshooting a Dash app, this article contains an instance I recently encountered wherein a dash app wasn't getting published and the app logs did not provide any inference into the cause

Root Cause:

The app contained 2 main statements and a redefinition of the dash object/app

Resolution:

The duplicate main statement had an incorrect port assigned and was read before the correct main statement while the redefinition of dash object was causing the Domino wrapper to publish an empty app.

Moving the correct main statement before and commenting out the duplicate definition resolved it.