500 error message when trying to submit a ticket with a long subject for a premium product #2806

Preconditions
Sign in to SuMo.

Steps to reproduce
Steps to reproduce the behavior:

1. Go to any premium product contact form (zendesk form)
2. Add a long string inside the Subject field (example: Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer vitae justo nec urna facilisis placerat. Curabitur non turpis ac odio varius fermentum. Sed dignissim, nisl at convallis tincidunt, massa lorem lacinia augue, vitae elit nulla sit amet erat.3)
3. Add something inside the Tell us more field.
4. Submit the question.

Expected behavior
The Subject field has a character limit, the ticket is not submitted and the user is prompted that the data introduced inside the "Subject" field is too long.

Actual behavior
500 error message.

Desktop:

• OS: Windows 11
• Browser: Firefox

Additional context

• This issue is reproducible in both stage and prod
• Sentry error: https://mozilla.sentry.io/issues/7064433108/?project=4504326799753216&query=is%3Aunresolved&referrer=issue-stream