ValueError in CTCLoss

[ghost]

TF version 1.1.0, Ubunu 16.04 Cuda 8.0, Cudnn 6

loss = tf.nn.ctc_loss(targets, logits, maxT, time_major=False)
File "/home/ilab/anaconda2/lib/python2.7/site-packages/tensorflow /python/ops/ctc_ops.py", line 145, in ctc_loss
ctc_merge_repeated=ctc_merge_repeated)
File "/home/ilab/anaconda2/lib/python2.7/site-packages/tensorflow/python/ops/gen_ctc_ops.py", line 165, in _ctc_loss
name=name)
File "/home/ilab/anaconda2/lib/python2.7/site-packages/tensorflow/python/framework/op_def_library.py", line 768, in apply_op
op_def=op_def)
File "/home/ilab/anaconda2/lib/python2.7/site-packages/tensorflow/python/framework/ops.py", line 2339, in create_op
set_shapes_for_outputs(ret)
File "/home/ilab/anaconda2/lib/python2.7/site-packages/tensorflow/python/framework/ops.py", line 1719, in set_shapes_for_outputs
shapes = shape_func(op)
File "/home/ilab/anaconda2/lib/python2.7/site-packages/tensorflow/python/framework/ops.py", line 1669, in call_with_requiring
return call_cpp_shape_fn(op, require_shape_fn=True)
File "/home/ilab/anaconda2/lib/python2.7/site-packages/tensorflow/python/framework/common_shapes.py", line 610, in call_cpp_shape_fn
debug_python_shape_fn, require_shape_fn)
File "/home/ilab/anaconda2/lib/python2.7/site-packages/tensorflow/python/framework/common_shapes.py", line 676, in _call_cpp_shape_fn_impl
raise ValueError(err.message)
ValueError: Shape must be rank 1 but is rank 0 for 'CTCLoss' (op: 'CTCLoss') with input shapes: [?,64,23], [?,?], [?], [].

[reedwm]

This question is better asked on StackOverflow since it is not a bug or feature request. There is also a larger community that reads questions there. Thanks!