tensorflow/core/util/ctc/ctc_loss_calculator.cc:144] No valid path found.

• ctc_loss(

• labels,

• inputs,

• sequence_length,

• preprocess_collapse_repeated=False,

• ctc_merge_repeated=True,

• time_major=True

• )

preprocess_collapse_repeated = True

 修改model.py里：self.loss = tf.nn.ctc_loss(labels=self.label, inputs=calout, sequence_length=self.rnnSeqLengths, preprocess_collapse_repeated=True, ignore_longer_outputs_than_inputs=False)