Issue Summary

I have setup the CalDAV app, and an event of 1 hour of call via cal.com.
People can schedule appointments here: https://cal.com/victor-paleologue/1h.
They receive an e-mail notification, but not me, and the form displays an error (sorry for my French):

La réunion n'a pas pu être réservée. unexpected character at line 1 column 1 of the JSON data

Steps to Reproduce

1. Schedule an appointment here: https://cal.com/victor-paleologue/1h
2. Be very clear that this is a test, please.
3. See for yourself =)

Technical details

• Firefox 107.0.1
• Mac OS Ventura 13.0.1
• arm64 processor

_CAL-571