matchzoo.contrib.models.ESIM(), model.save, raise ValueError: substring not found

[paulxin001]

Describe the bug

when I run tutorials.wikiqa.esim.ipynb, in the last run model.save(SAVE_PATH), raise ValueError: substring not found

File "D:\ProgramData\Anaconda3\envs\Matchzoo\lib\site-packages\tensorflow_core\python\ops\variables.py", line 1150, in _shared_name
return self.name[:self.name.index(":")]

[paulxin001]

i get the same bug， are you fit it ?