Why are you seeing this error?
Your interview has not been created yet. Every time you try to access the interview and see this error your recruiter is sent an email. In that email, we tell them your name and how to fix the error you are seeing. You will be able to access the interview when they have fixed the issue.
Try taking the interview again in a few days. If you continue to see the error, contact your recruiter or the company you have applied for.