Traceback (most recent call last):
  File "D:\ML Laboratory New\3. Reinforcement Learning\3. Duelling Network\ddqn.py", line 225, in <module>
    action = agent.choose_action(current_state)
  File "D:\ML Laboratory New\3. Reinforcement Learning\3. Duelling Network\ddqn.py", line 160, in choose_action
    actions = self.model.advantage(state)
  File "C:\Users\Tejas\AppData\Local\Programs\Python\Python37\lib\site-packages\tensorflow_core\python\keras\engine\base_layer.py", line 822, in __call__
    outputs = self.call(cast_inputs, *args, **kwargs)
  File "C:\Users\Tejas\AppData\Local\Programs\Python\Python37\lib\site-packages\tensorflow_core\python\keras\layers\core.py", line 1131, in call
    outputs = standard_ops.tensordot(inputs, self.kernel, [[rank - 1], [0]])
  File "C:\Users\Tejas\AppData\Local\Programs\Python\Python37\lib\site-packages\tensorflow_core\python\ops\math_ops.py", line 4106, in tensordot
    ab_matmul = matmul(a_reshape, b_reshape)
  File "C:\Users\Tejas\AppData\Local\Programs\Python\Python37\lib\site-packages\tensorflow_core\python\util\dispatch.py", line 180, in wrapper
    return target(*args, **kwargs)
  File "C:\Users\Tejas\AppData\Local\Programs\Python\Python37\lib\site-packages\tensorflow_core\python\ops\math_ops.py", line 2798, in matmul
    a, b, transpose_a=transpose_a, transpose_b=transpose_b, name=name)
  File "C:\Users\Tejas\AppData\Local\Programs\Python\Python37\lib\site-packages\tensorflow_core\python\ops\gen_math_ops.py", line 5616, in mat_mul
    _ops.raise_from_not_ok_status(e, name)
  File "C:\Users\Tejas\AppData\Local\Programs\Python\Python37\lib\site-packages\tensorflow_core\python\framework\ops.py", line 6606, in raise_from_not_ok_status
    six.raise_from(core._status_to_exception(e.code, message), None)
  File "<string>", line 3, in raise_from
tensorflow.python.framework.errors_impl.NotFoundError: Could not find valid device for node.
Node:{{node MatMul}}
All kernels registered for op MatMul :
  device='GPU'; T in [DT_FLOAT]
  device='GPU'; T in [DT_DOUBLE]
  device='GPU'; T in [DT_COMPLEX64]
  device='GPU'; T in [DT_COMPLEX128]
  device='GPU'; T in [DT_HALF]
  device='CPU'; label='eigen'; T in [DT_FLOAT]
  device='CPU'; label='eigen'; T in [DT_DOUBLE]
  device='CPU'; label='eigen'; T in [DT_HALF]
  device='CPU'; label='eigen'; T in [DT_BFLOAT16]
  device='CPU'; label='eigen'; T in [DT_INT32]
  device='CPU'; label='eigen'; T in [DT_INT64]
  device='CPU'; label='eigen'; T in [DT_COMPLEX64]
  device='CPU'; label='eigen'; T in [DT_COMPLEX128]
  device='CPU'; T in [DT_FLOAT]
  device='CPU'; T in [DT_DOUBLE]