C4_W3_EX2 "Kernel Dead"

In the exercise “Image Segmentation with U-Net”, when I train the U-Net model, the Kernel is dead at the beginning of the training. I tried to restart the kernel and free up memory but it didn’t work. It holds me back from progressing in the course. Any suggestion would be helpful!

Edit: I rebooted the server and succeeded to train the model!

Thanks for your report.