opencv cannot read net - Error of "Unknown layer type"

[chenharel1]

Hello,
I am trying to use your code for running detection of yolo v1.
I use python 3.5
I use opencv 4.1.0
The error occurs in line 57:
net = cv2.dnn.readNet(args.weights, args.config)
It says:

cv2.error: OpenCV(4.1.0) /io/opencv/modules/dnn/src/darknet/darknet_io.cpp:668: error: (-212:Parsing error) Unknown layer type: connected in function 'ReadDarknetFromCfgStream'

I took the weights and config from the original Darknet.
I tried weights and cfg for yolov1, as well as for yolov1 tiny, but the same error happens for both.
On the other hand, when I tried weights and cfg for yolov3, it succeeded.
So, does cv2.dnn modules are not compatible with yolo1? Is that the problem or anything else?

Thanks!