Shinyapp Dashboard reports "Application successfully deployed" but doesn't update dashboard

I have a fresh install of RStudio, and updated data for an app last deployed / updated in Feb.

I had to install a bunch of packages before it would complete the update as follows: RColorBrewer colorspace data.table farver ggplot2 gridExtra gtable httr isoband

The Deploy log reports the following successful deployment:

Preparing to deploy application...DONE
Uploading bundle for application: 3586339...Detecting system locale ... en_AU
Deploying bundle: 6099616 for application: 3586339 ...
Waiting for task: 1186783766
building: Processing bundle: 6099616
building: Building image: 7112770
building: Fetching packages
building: Installing packages
building: Installing files
building: Pushing image: 7112770
deploying: Starting instances
rollforward: Activating new instances
unstaging: Stopping old instances
Application successfully deployed to
Deployment completed:

But the dashboard fails to update.

Any thoughts as to what might be going on. Go easy, I'm a n00b to RStudio and shinyapps, and have been tasked with updating this dashboard that was developed by others.