[BUG] Ticket Creation for appointments does not work

[hgx1320]

Environment

• Server OS Distribution: Ubuntu 22.04.4 LTS
• OTOBO installation typ: Nativ Apache
• Browser: Firefox
• OTOBO version: 11.0.5

Expected behavior

When I open a new appointment and I would like to create an ticket automatically with the appointment, I would like to see the appointment in the calendar and receive a ticket at the written date.

Actual behavior

I run into the error I put as Screenshot and nothing else happens.

How to reproduce

Steps to reproduce the behavior:

1. Go to 'Calender'
2. Click on 'Add Appointment'
3. Scroll down to 'Ticket Creation'
4. Design Ticket to your wishes
5. Save
6. See error

Additional information

Screenshots