tkinter frame camera opencv

[Nick_tkinter]

OK.I will describe it simply.I want to push a button and enable camera inside a frame ,when I push it again I want to disable camera.
So ,I have a file(eg: file b.py) and I call function camera_status(...) which is inside (eg: file a.py),the button is inside camera_status(...) and when I push it in order to enable/disable the camera, I have to call the same function,because inside this function I enable/disable camera (generally control camera).
Am I clear?
The problem is that the light of my laptop's camera is enabled ,but the frame doesn't show anything.

My code is big and have a lot of files.I made 2 files (file a and b),just to see what I mean and what I want in order to help you understand.

file a.py:

from tkinter import *
#from GUI_camera import video_stream
import cv2 , PIL
from PIL import Image,ImageTk
cap = cv2.VideoCapture(0)

def camera_status(root , mode):  # control camera
    camera_frame = LabelFrame(root , width = 663 , height = 528)
    camera_frame.place(x = 844 , y = 300)
    
    if(mode):
        ret , frame = cap.read()
        if(ret):
            frame = cv2.flip(frame , 1)
            cv2image = cv2.cvtColor(frame, cv2.COLOR_BGR2RGBA)
            img = PIL.Image.fromarray(cv2image)
            imgtk = ImageTk.PhotoImage(image = img)
            camera_frame.imgtk = imgtk
            camera_frame.configure(image = imgtk)
        print("Camera is enabled")
        #enable_camera_logo = Image.open("logo/enable_camera.png")
        
    else:
        print("camera is disabled")
        #enable_camera_logo = Image.open("logo/disable_camera.png")
        pass

    #enable_camera_logo = enable_camera_logo.resize( (75 , 30) , resample = 0)
    #enable_camera_image = ImageTk.PhotoImage(enable_camera_logo)

    camera_button = Button(root , text = "Control camera")  # see in the terminal the output message
    camera_button.config(command = lambda: camera_status(root , mode) )
    #camera_button.image = enable_camera_image
    camera_button.place(x = 840 , y = 250)

    mode = not mode

file b.py:

from tkinter import *
from a import camera_status

root = Tk()
root.geometry("1800x1100")
root.after(1 , camera_status(root , False) )  
root.mainloop()

Can you help me?
Thanks in advance.