Unable to create a new application

# Bug Report

I tried with multiple accounts and multiple browsers,
but it just says "We could not create your application. Try again."

There is a network error, but it refreshes too fast to capture it.

## Your Environment
- Platform: Web: Chrome, Safari, Firefox
- Operating System / Browser: MacOS

Start by reproducing application creation in the web interface using the reported browsers and observing the network request before the page refreshes. Trace the failed request through the TypeScript application, then verify that creating an application succeeds and that the underlying error is no longer hidden by the generic message.

Written by the indexing model from the issue text.