error: sentencepiece 0.1.94 is installed but sentencepiece==0.1.91 is required by {'transformers'}
## Environment info
     
- `transformers` version: 3.5.1
- Platform: google cloud 
- Python version: 3.7 
- PyTorch version (GPU?): TPU, 1.6
- Tensorflow version (GPU?): - 
- Using GPU in script?: - 
- Using distributed or parallel set-up in script?: - 

### Who can help
 tokenizers: @mfuntowicz
 Trainer: @sgugger
 examples/distillation: @VictorSanh
 examples/seq2seq: @patil-suraj

## Information
I am using requirements.txt file inside examples, and installing it, it fails with this error: 

error: sentencepiece 0.1.94 is installed but sentencepiece==0.1.91 is required by {'transformers'}

here is my setup script, as mentioned in requirements of transformers 3.5.1 for running the examples. thank you
   ```
   install_requires=[
        'sentencepiece != 0.1.92',
        'transformers==3.5.1',
        'tensorboard',
        'scikit-learn',
        'seqeval',
        'psutil',
        'sacrebleu',
        'rouge-score',
        'tensorflow_datasets',
        'pytorch-lightning==1.0.4',
        'matplotlib',
        'git-python==1.0.3',
        'faiss-cpu',
        'streamlit',
        'elasticsearch',
        'nltk',
        'pandas',
        'datasets',
        'fire',
        'pytest',
        'conllu',
        'tf-nightly',
        'google-cloud-storage',
      ],

```



The error tells you it wants SentencePiece 0.1.91, can you install that version instead?
```
pip install -U sentencepiece==0.1.91
```
We should update the requirements.txt file to reflect this. Do you want to open a PR?<|||||>This issue has been automatically marked as stale and been closed because it has not had recent activity. Thank you for your contributions.

If you think this still needs to be addressed please comment on this thread.