TypeError: List of Tensors when single Tensor expected

[lmolhw5252]

Traceback (most recent call last):
File "/home/user/PycharmProjects/MDLSTM-master/main.py", line 90, in
run(1)
File "/home/user/PycharmProjects/MDLSTM-master/main.py", line 53, in run
rnn_out, _ = multi_dimensional_rnn_while_loop(rnn_size=hidden_size, input_data=x, context_wind_shape=[1, 1])
File "/home/user/PycharmProjects/MDLSTM-master/md_lstm.py", line 193, in multi_dimensional_rnn_while_loop
parallel_iterations=1)
File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/ops/control_flow_ops.py", line 2816, in while_loop
result = loop_context.BuildLoop(cond, body, loop_vars, shape_invariants)
File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/ops/control_flow_ops.py", line 2640, in BuildLoop
pred, body, original_loop_vars, loop_vars, shape_invariants)
File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/ops/control_flow_ops.py", line 2576, in BuildLoop
c = ops.convert_to_tensor(pred(*packed_vars))
File "/home/user/PycharmProjects/MDLSTM-master/md_lstm.py", line 190, in condition
return tf.less(time, tf.constant(h_red * w_red))
File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/framework/constant_op.py", line 208, in constant
value, dtype=dtype, shape=shape, verify_shape=verify_shape))
File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/framework/tensor_util.py", line 383, in make_tensor_proto
_AssertCompatible(values, dtype)
File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/framework/tensor_util.py", line 300, in _AssertCompatible
raise TypeError("List of Tensors when single Tensor expected")
TypeError: List of Tensors when single Tensor expected