Integrate/Connect object detection (webcam) with GPIO on Raspberry Pi 4

Question

I'm trying an object detection program using Python language, and want to connect it to the Raspberry Pi's GPIO.

for code in decode(frame):
        decoded_data = code.data.decode("utf-8")
        rect_pts = code.rect
        print("\nID:", code.data.decode("utf-8"))
        
        if decoded_data in reg_qr:
            infoOut = 'Authorized'
            bbColor = (0,255,0)
            
        else:
            infoOut = 'Un-Authorized'
            bbColor = (0,0,255)
        
        pts = np.array([code.polygon], np.int32)
        cv2.polylines(frame, [pts], True, bbColor, 3)
        cv2.putText(frame, infoOut, (rect_pts[0], rect_pts[1]), cv2.FONT_HERSHEY_SIMPLEX, 1, bbColor,3)

That is the Python code snippet. It runs fine, according to the algorithm. But when I want to drive the servo with this syntax, I can't

if decoded_data in reg_qr:
            angle = 90
            servo1.ChangeDutyCycle(2+(angle/18))
            servo1.ChangeDutyCycle(0)
            time.sleep(2)

---

if distance <= 5.01:
            angle = 90
            servo1.ChangeDutyCycle(2+(angle/18))
            time.sleep(2)
            servo1.ChangeDutyCycle(0)

I think it would be the same as driving the servo with the input from the ultrasonic sensor. Turns out I was wrong. Anyone know the solution?