Slack bolt application restarting continuously

I am trying to deploy a slack bolt + flask application, the application is coming up for a second and it restarts again. There are no logs for troubleshooting. any suggestions please ?


Your service here is using our free instance type. Free instance types spin down after 15 minutes of inactivity and then will restart when they next receive a request. This behavior is documented at

If you need your service always be available, moving to a paid instance type avoids this behavior, and the service will remain running constantly.

To change the instance type, follow these steps

  • Navigate to the service in our dashboard

  • Open the ‘settings’ tab

  • Click on the ‘Change Instance Type’ button

  • Select the instance type you wish to use (the minimum to avoid sleeping is Starter)

  • If you want to change back to the free instance type, repeat this process but select ‘free’.

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