operands could not be broadcast together with shapes

[XenonofArcticus]

Python 3.7.5 Windows 64, pure black darkframe provided:

get_darkframe(): loaded darkframe.
Traceback (most recent call last):
File "py_image_merger.py", line 358, in
main()
File "py_image_merger.py", line 274, in main
input_image_no_border = input_image_ - darkframe_image_no_border
ValueError: operands could not be broadcast together with shapes (2050,2500) (2050,2500,3)