Bug's found in your resnext152-32x4d.cfg

[Chrisa142857]

Hello!
I've met a bug when I use your resnext152-32x4d.cfg file. My project was forked from ultralytics/yolov3.
Bug description: The size of feature maps are unmatched to do 'shortcut' op.
Where: The config file of ResneXt152 backbone - resnext152-32x4d.cfg.

The code as follow is one part of the cfg file and it's shown that feature maps in sample level X/2 cannot ADD with sample level X.

[shortcut] # -4 (sample level X)
...
[convolutional]# -3
...
[convolutional]# -2 (Downsample)
groups = 32
batch_normalize=1
filters=128
size=3
stride=2
pad=1
activation=leaky
[convolutional]# -1 (input of the shortcut)
...
[shortcut]# 0 (sample level X/2)
from=-4
activation=leaky