Swift Curriculum QuestionBot2 error

Hi all, i am new in programming (bloody beginner) and trying to learn it with the Apple Curriculum.
Unfortunately lesson 16 "QuestionBot2" is buggy and after days of searching for a solution I hope some of you could offer any help.

Error message: Thread 1: "unable to dequeue a cell with identifier Antwort - must register a nib or a class for the identifier or connect a prototype cell in a storyboard"

Using Xcode 12.3 on OS 10.15.7

Is there any fix available or a destription which steps could help to fix the problem?
Swift Curriculum QuestionBot2 error
 
 
Q