Graph execution error

[BaronJoseph]

Hi! I'm trying to run this and come across this error while compiling.

`InvalidArgumentError Traceback (most recent call last)
in ()
14 batch_size=64,
15 validation_data=test_generator,
---> 16 callbacks=[early_stopping])
17
18 # finetuning with all layers set trainable

1 frames
/usr/local/lib/python3.7/dist-packages/tensorflow/python/eager/execute.py in quick_execute(op_name, num_outputs, inputs, attrs, ctx, name)
53 ctx.ensure_initialized()
54 tensors = pywrap_tfe.TFE_Py_Execute(ctx._handle, device_name, op_name,
---> 55 inputs, attrs, num_outputs)
56 except core._NotOkStatusException as e:
57 if name is not None:

InvalidArgumentError: Graph execution error:`