b'Content-Type: image/jpeg\r\n\r\n' + frame + b'\r\n\r\n') TypeError: can't concat NoneType to bytes

[ozicmoi]

Hello there. I want to run the Yolov5 object detection model through flask. I am getting this error. My codes are as follows. Can you help me please?

``import cv2
import numpy as np
import cv2
import time
import torch
import pytesseract

model = torch.hub.load('ultralytics/yolov5', 'custom', path='/home/uni/Masaüstü/yolov5/plaka.pt') # plate detection

class VideoCamera(object):
def init(self):
self.video = cv2.VideoCapture("rtsp://admin:@192.168.1.24:554/mode=real&idc=1&ids=2")

def __del__(self):
    self.video.release()

def get_frame(self):
    success, image = self.video.read()
    image = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
    prev_frame_time = 0
    new_frame_time = 0
    image = cv2.resize(image, (500, 300))
    results = model(image)
    for _, det in enumerate(results.xyxy[0]):  # convert from tensor to numpy
        box = det.detach().cpu().numpy()[:5]  # convert from float to integer
        box = [int(x) for x in box]
        x1, y1, x2, y2, name = box  # crop the license plate image part
        image = image[y1:y2, x1:x2].copy()
        label = "plate"
        color = (0, 255, 255)
        cv2.rectangle(image, (x1, y1), (x2, y2), (0, 255, 255), 2)  # draw a box on original image
        font = cv2.FONT_HERSHEY_SIMPLEX
        new_frame_time = time.time()
        fps = 1 / (new_frame_time - prev_frame_time)
        prev_frame_time = new_frame_time
        fps = int(fps)
        fps = str(fps)
        image=cv2.putText(image, fps, (7, 70), font, 3, (100, 255, 0), 3, cv2.LINE_AA)


        ret, jpeg = cv2.imencode('.jpg', image)
        return jpeg.tobytes()

``