Error launch yolo.py or yolo-tiny.py

Hello, 

When i test your program, with opencv 4.5.5, i have this error. 
Do you have an idear, what is the problem ? 

Command : 
Traceback (most recent call last):
  File "python/yolo-tiny.py", line 40, in <module>
    if confidence >= 0.4:
ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.all()

Thanks for your answer.
Have a nice day.
