App disappears when I deploy onto CloudBees with IntelliJ

App disappears when I deploy onto CloudBees with IntelliJ

I am on the free tier of CloudBees. I want to deploy a simple Clojure web
app.
First, I create the app in CloudBees' app manager. Once I do this,
everything looks fine in the server logs. I see the default application
come up, and I can browse to it.
Then I try to deploy my own code from IntelliJ. When I do, IntelliJ makes
the connection to CloudBees successfully, and sits around for about 5--10
seconds. Then it says that a server-side error occurred, and I should
check server logs.
When I go to check the logs, I find that the app is no more. It's as if
IntelliJ deleted it. I am able to re-create it with the same name. I've
tried this several times, with the same result.
How can I get more visibility into what's going on?