 Traceback (most recent call last):   File "C:\Users\nickb\Anaconda0\envs\py00\lib\site-packages\tensorflow\python\client\session.py", line 0000, in _do_call     return fn(*args)   File "C:\Users\nickb\Anaconda0\envs\py00\lib\site-packages\tensorflow\python\client\session.py", line 0000, in _run_fn     status, run_metadata)   File "C:\Users\nickb\Anaconda0\envs\py00\lib\contextlib.py", line 00, in __exit__     next(self.gen)   File "C:\Users\nickb\Anaconda0\envs\py00\lib\site-packages\tensorflow\python\framework\errors_impl.py", line 000, in raise_exception_on_not_ok_status     pywrap_tensorflow.TF_GetCode(status)) tensorflow.python.framework.errors_impl.InvalidArgumentError: You must feed a value for placeholder tensor 'batch_normalization_0/keras_learning_phase' with dtype bool      [[Node: batch_normalization_0/keras_learning_phase = Placeholder[dtype=DT_BOOL, shape=[], _device="/job:localhost/replica:0/task:0/cpu:0"]()]]  During handling of the above exception, another exception occurred:  Traceback (most recent call last):   Traceback (most recent call last):   File "C:\Users\nickb\Anaconda0\envs\py00\lib\site-packages\tensorflow\python\client\session.py", line 0000, in _do_call     return fn(*args)   File "C:\Users\nickb\Anaconda0\envs\py00\lib\site-packages\tensorflow\python\client\session.py", line 0000, in _run_fn     status, run_metadata)   File "C:\Users\nickb\Anaconda0\envs\py00\lib\contextlib.py", line 00, in __exit__     next(self.gen)   File "C:\Users\nickb\Anaconda0\envs\py00\lib\site-packages\tensorflow\python\framework\errors_impl.py", line 000, in raise_exception_on_not_ok_status     pywrap_tensorflow.TF_GetCode(status)) tensorflow.python.framework.errors_impl.InvalidArgumentError: You must feed a value for placeholder tensor 'batch_normalization_0/keras_learning_phase' with dtype bool      [[Node: batch_normalization_0/keras_learning_phase = Placeholder[dtype=DT_BOOL, shape=[], _device="/job:localhost/replica:0/task:0/cpu:0"]()]]  During handling of the above exception, another exception occurred:  Traceback (most recent call last):   File "C:/Users/nickb/PycharmProjects/testing/MNIST_implementation.py", line 00, in <module>     transformed_twin = Lambda(function=lambda x: apply_affine(x[0], x[0]))([twin0, transformInput])   File "C:\Users\nickb\Anaconda0\envs\py00\lib\site-packages\keras\engine\topology.py", line 000, in __call__     output = self.call(inputs, **kwargs)   File "C:\Users\nickb\Anaconda0\envs\py00\lib\site-packages\keras\layers\