Overview

Currently, when an error occurs on the input page (e.g., unsupported file type), the error message is displayed inside the input text area, which is confusing and not user-friendly.

Steps to Reproduce

1. Navigate to the input page where the user submits files or text.
2. Add a file with an unsupported type or submit invalid input.
3. Observe that the error is injected into the input area, which breaks the input’s purpose and confuses users.

Expected Behavior

• The input area should remain untouched (no error text inside).
• A popup modal, toast notification, or alert banner should appear clearly explaining the issue.
• The user should be able to dismiss the error easily.