camera is returning a black image instead of saving a picture from the camera

This code is meant to present an image of the user however, all I get returned is a black image the error code is

Traceback (most recent call last): File "/Users/ethanbrahmawar/Desktop/CardLayout/src/my/cardlayout/Stay Strong App html/rekognition/TEST.PY", line 22, in captureimage('Access','.jpeg') File "/Users/ethanbrahmawar/Desktop/CardLayout/src/my/cardlayout/Stay Strong App html/rekognition/TEST.PY", line 15, in captureimage rgb = cv2.cvtColor(frame, cv2.COLOR_BGR2BGRA) cv2.error: OpenCV(4.6.0) /Users/xperience/actions-runner/_work/opencv-python/opencv-python/opencv/modules/imgproc/src/color.cpp:182: error: (-215:Assertion failed) !_src.empty() in function 'cvtColor'

import pyttsx3
import cv2
from datetime import datetime

def captureimage(foldername,suffix):
    engine=pyttsx3.init()
    engine.say("face recognition enabled please look at the camera")
    engine.runAndWait()
    now = datetime.now()
    current_time = now.strftime("%H:%M:%S")
    CAPTURE=foldername+'/capture'+current_time+suffix
    cap = cv2.VideoCapture(1)
    ret, frame = cap.read()
    rgb = cv2.cvtColor(frame, cv2.COLOR_BGR2BGRA)
    cv2.imshow('frame', rgb)
    out = cv2.imwrite(CAPTURE, frame)
    cap.release()
    cv2.destroyAllWindows()
    return CAPTURE

captureimage('Access','.jpeg')