Jupyter Labs Kernel Keeps Dying

I am enrolled in the DeepLearning.AI TensorFlow Developer Professional Certificate. I am currently in the 3rd course of the specialization "Natural Language Processing in Tensorflow. On week 3 the programming assignment I try to run the history = model.fit() kernel and I continue to receive the attached error. I have tried everything I can think of including restarting the kernel, using different browsers, restarting the computer, modifying previous code, unfortunately nothing has worked. Can you help me fix this and get it to run so I can finish my specialization?
I have attached few screen shots of what is going on.


Please click my name and message your notebook as an attachment. Send the notebook in ipynb format and not in pdf / image format.