AttributeError: 'SeqUnit' object has no attribute 'mean_loss'

[zhangzhang827]

Traceback (most recent call last):
File "D:/pycharmprojects/wiki2bio-master/Main.py", line 241, in
main()
File "D:/pycharmprojects/wiki2bio-master/Main.py", line 234, in main
train(sess, dataloader, model)
File "D:/pycharmprojects/wiki2bio-master/Main.py", line 99, in train
loss += model(x, sess)
File "D:\pycharmprojects\wiki2bio-master\SeqUnit_1.py", line 411, in call
loss, _ = sess.run([self.mean_loss, self.train_op],
AttributeError: 'SeqUnit' object has no attribute 'mean_loss'

def call(self, x, sess):
loss, _ = sess.run([self.mean_loss, self.train_op],
{self.encoder_input: x['enc_in'], self.encoder_len: x['enc_len'],
self.encoder_field: x['enc_fd'], self.encoder_pos: x['enc_pos'],
self.encoder_rpos: x['enc_rpos'], self.decoder_input: x['dec_in'],
self.decoder_len: x['dec_len'], self.decoder_output: x['dec_out']})
return loss
Hello, I have been debugging this error for a long time, but it has always been wrong. I would like to ask if you can help me, thank you。