Alexey

Same problem here. Tried all possible mirrors for yolov4 weights. But I've made only one change to convert.py: replaced `from keras import backend as K` to `import tensorflow.python.keras.backend as K`,...

> uninstalling xformers==0.0.12 and installing pip install git+https://github.com/facebookresearch/xformers.git#egg=xformers works. Thank you, your solution worked for me!