Run Time error

[krishnasen2401]

Encrypting: 4600 / 4608
Traceback (most recent call last):
File "C:\Users\krishnasen\AppData\Local\Programs\Python\Python37\lib\runpy.py", line 193, in _run_module_as_main
"main", mod_spec)
File "C:\Users\krishnasen\AppData\Local\Programs\Python\Python37\lib\runpy.py", line 85, in run_code
exec(code, run_globals)
File "ImageEncryptor_main.py", line 30, in
image_crypt.encrypt_image(args.encrypt, args.keys[0], args.keys[1], args.output)
File "ImageEncryptor\image_crypt.py", line 34, in encrypt_image
two_key_encryption(im_arr, x_size, y_size, key1, key2)
File "ImageEncryptor\image_crypt.py", line 77, in two_key_encryption
permut = utils.two_kdp(size, k1, k2)
File "ImageEncryptor\utils.py", line 33, in two_kdp
C[i] = int(p)
TypeError: 'range' object does not support item assignment