ValueError: setting an array element with a sequence

[libing125]

ValueError: setting an array element with a sequence.
global step 0 learning rate 0.1000 step-time 0.00 perplexity [1.00] kl_loss [0.00] dec_loss [0.00] dis_loss [0.00]
Traceback (most recent call last):
File "main.py", line 342, in
evaluate(model, sess, data_dev)
File "main.py", line 202, in evaluate
outputs = model.step_decoder(sess, batched_data, forward_only=True, global_t = FLAGS.full_kl_step)
File "/home/Documents/code/sentence-function/model.py", line 262, in step_decoder
return session.run(output_feed, input_feed)
File "/home/anaconda3/envs/conda36/lib/python3.6/site-packages/tensorflow/python/client/session.py", line 929, in run
run_metadata_ptr)
File "/home/anaconda3/envs/conda36/lib/python3.6/site-packages/tensorflow/python/client/session.py", line 1121, in _run
np_val = np.asarray(subfeed_val, dtype=subfeed_dtype)
File "/home/anaconda3/envs/conda36/lib/python3.6/site-packages/numpy/core/numeric.py", line 538, in asarray
return array(a, dtype, copy=False, order=order)
ValueError: setting an array element with a sequence.

I saw @shaneshbi solved this problem by adjusting .label files, but still can't figure it out.