Problem: What is happening?

When creating a new Cron Job, clicking on the Frequency input field crashes the Devopness web app and renders the generic "Devopness client error" page instead of opening the frequency picker.

The form is otherwise functional (Name, Command, Run as fields work as expected), but interacting with Frequency makes the page unusable — the user can't complete the cron job creation flow.

Form before the crash (Frequency field):

Crash screen after clicking Frequency:

Expected behavior

Clicking on the Frequency field should open the frequency picker (cron expression builder / preset options) so the user can choose how often the cron job should run, without crashing the application.

Steps to reproduce

1. Log in to the Devopness web app
2. Navigate to a Project → Environment → Cron Jobs
3. Click Add (or navigate to /projects/<id>/environments/<id>/cronjobs/add)
4. Click on the Frequency field
5. The page crashes and shows the "Devopness client error — We're sorry, something went wrong! :-(" screen

Which Devopness module(s) are the source of the bug?

• Devopness web app

Package Version

N/A (production web app at app.devopness.com)

Reproduction link

N/A — reproducible directly on the production app.

Example URL where the crash occurred:
https://app.devopness.com/projects/779/environments/1023/cronjobs/add

Additional details

• Date/time of reproduction: April 29, 2026 at 19:40:25 GMT-3
• The error page only exposes a generic message; the underlying exception is not surfaced to the user.
• Other fields on the same form (Name, Command, Run as) behave normally — only Frequency triggers the crash.