Face recognition video crashing[SOLVED]

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Hello!

I'm trying to use OpenCV for face recognition. For some reason the dataset creation part crashes after some seconds. Sometimes a few images can be captured, but it never works fully. No error messages are produced. Can anyone please see any issues in this code? I have stared at it for so long. I'm very thankful for any help!

import numpy as np
import os
import cv2

face_cascade = cv2.CascadeClassifier('/home/pi/opencv-3.3.0/data/haarcascades/haarcascade_frontalface_default.xml')
print("Starting face recognition")
print("Step 1: Dataset creation.")
path = '/home/pi/Documents/FaceRecognition/dataset/'# path were u want store the data set
id = input('Enter person\'s name: ')

pathname=path+id
print(pathname)

try:
    # Create target Directory
    print(path+str(id))
    os.mkdir(path+str(id))
    print("Directory " , path+str(id),  " Created ")
except FileExistsError:
    print("Directory " , path+str(id) ,  " already exists")
sampleN=0;
whileLooper=0;
sampleBreakPoint=30;
print("Efter create directory")
cap = cv2.VideoCapture(0)
while(cap.isOpened()):
    whileLooper = whileLooper+1;
    print("Print1. Loop: "+str(whileLooper))
    ret, img = cap.read()
    if not ret:
        break
    cv2.waitKey(10)

    gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
    cv2.waitKey(10)

    faces = face_cascade.detectMultiScale(gray,1.3, 5)

    cv2.waitKey(10)
    for (x,y,w,h) in faces:
        #print("In for loop "+str(sampleN))
        sampleN=sampleN+1;

        cv2.imwrite(path+str(id)+ "/" +str(sampleN)+ ".jpg", gray[y:y+h,x:x+w])
        cv2.waitKey(10)
        cv2.rectangle(img,(x,y),(x+w,y+h),(255,0,0),2)

        print("Found image number " +str(sampleN));

    cv2.imshow('img',img)

    cv2.waitKey(100)

    if sampleN > sampleBreakPoint:
        print(str(sampleBreakPoint)+" images found. Now breaking.")
        cv2.waitKey(300)
        break
cap.release()

cv2.destroyAllWindows()