Description of problem:

 When clicking 'Submit' on the 'Create Host' page without entering any data, the UI does not provide field-level validation. Instead, it redirects to a generic error page: "ERF42-2587 [Foreman::Exception]: Must provide an operating system".

How reproducible:

Is this issue a regression from an earlier version:

Steps to Reproduce:

1. WEB Ui --> hosts --> create host --> submit

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Actual behavior:
The application throws a back-traceable exception page, which is misleading and implies a system-level failure.

Expected behavior:
The UI should highlight mandatory fields (like Name, Operating System, etc.) in red and prevent form submission until they are filled.

Business Impact / Additional info: