Error with shortcut layer in yolov3

[EslamHaourn]

I’m beginner. I try to run the model in that link:
https://github.com/ayooshkathuria/YOLO_v3_tutorial_from_scratch
in darknet file:
elif module_type == "shortcut":
from_ = int(module["from"])
x = outputs[i-1] + outputs[i+from_]

I got the following error with this line
x = outputs[i-1] + outputs[i+from_]
RuntimeError: The size of tensor a (210) must match the size of tensor b (208) at non-singleton dimension 3
the output is dictionary caches the outputs for the route layer
I would like to know the source of error and help me fix that
thanks in advance

[cedrickchee]

I don't understand the question.
What the link has to do with this repo?

Also, please format your code properly.