Error during training the transition model: ValueError: could not broadcast input array from shape (0,3,160,320) into shape (60,3,160,320)

Environment: Anaconda + Keras 1.0.6 + Tensorflow 1.0.0 (Unable to find TF0.9.0 )

I ran the codes according to the Drive Simulator tutorial: https://github.com/commaai/research/blob/master/DriveSim.md

Everything is OK before the 5th step "Train transition model".

I ran the server for the transition model first, in window 1, and train the transition model in window 2: ./train_generative_model.py transition --batch 64 --name transition

Window 1 (ran the server code:./server.py --time 60 --batch 64) outputs the above error from time to time. As is shown in the screen shot:


Could anyone help me with this issue?
Best Regards! ：）