Candidate is unable to reschedule or cancel an interview due to an error message

Summary:

After an applicant selects an interview time slot they get an error message. The interview is still scheduled. If they navigate to Profile -> "view details" they get the same error and are unable to reschedule or cancel. The template allows for them to reschedule and/or cancel.

Content (required):

This is the message they get right after scheduling the initial interview:

If they try to navigate back to the scheduled interview to adjust it, this is the experience:

Here is the interview template config. They are still within all the allowable parameters:

Version (include the version you are using, if applicable):