Viewing app logs

You can view your Shiny application's logs either through the CLI or through the Heroku dashboard.

Using the CLI

Run the following - replacing docker-r-example-app with the name of your application.

heroku logs -a docker-r-example-app -t

Using the Heroku dashboard

Open your application in the Heroku dashboard, click More and then View Logs.

Click More, View Logs

View your logs

Common log entries

Look for

Error R14 (Memory quota exceeded)

This means you ran out of memory. You may need to change the number of R Threads running, optimize your application, or choose a larger dyno size.

In addition, look for R runtime or library errors. These errors can be preempted before deploying your app publically by running your application locally with Docker first.