When running,I have an error:TypeError: int() argument must be a string, a bytes-like object or a number, not 'NoneType'

[xueyuanyuan0410]

When running,I have an error:
Traceback (most recent call last):
File "example.py", line 8, in
model.train(ckpt_dir='ckpt')
File "/home/zy/ORGAN/ORGAN-master/organ/init.py", line 745, in train
self.pretrain()
File "/home/zy/ORGAN/ORGAN-master/organ/init.py", line 670, in pretrain
_, g_loss, g_pred = self.generator.pretrain_step(self.sess,batch)
File "/home/zy/ORGAN/ORGAN-master/organ/generator.py", line 210, in pretrain_step
outputs = session.run([self.pretrain_updates,self.pretrain_loss,self.g_predictions],
File "/home/zy/.conda/envs/zy_2/lib/python3.8/site-packages/tensorflow/python/client/session.py", line 967, in run
result = self._run(None, fetches, feed_dict, options_ptr,
File "/home/zy/.conda/envs/zy_2/lib/python3.8/site-packages/tensorflow/python/client/session.py", line 1166, in _run
np_val = np.asarray(subfeed_val, dtype=subfeed_dtype)#np_val = np.asarray(subfeed_val, dtype=subfeed_dtype)
File "/home/zy/.local/lib/python3.8/site-packages/numpy/core/_asarray.py", line 83, in asarray
return array(a, dtype, copy=False, order=order)
TypeError: int() argument must be a string, a bytes-like object or a number, not 'NoneType'
Any solutions?
Thank you for your answer.