 AttributeError: module 'sacrebleu' has no attribute 'DEFAULT_TOKENIZER'  in translation.ipynb notebook
I'm trying to use translation.ipynb notebook. I'm getting below error:

![image](https://user-images.githubusercontent.com/32965166/129086137-d5a1daca-ad95-4e8f-98a5-01f1618de791.png)



## Environment info
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- `transformers` version: 4.9.2
- Platform:
- Python version:
- PyTorch version (GPU?):
- Tensorflow version (GPU?):
- Using GPU in script?:
- Using distributed or parallel set-up in script?:

### Who can help
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Models:

- albert, bert, xlm: @LysandreJik
- blenderbot, bart, marian, pegasus, encoderdecoder,  t5: @patrickvonplaten, @patil-suraj
- longformer, reformer, transfoxl, xlnet: @patrickvonplaten
- fsmt: @stas00
- funnel: @sgugger
- gpt2: @patrickvonplaten, @LysandreJik
- rag: @patrickvonplaten, @lhoestq
- tensorflow: @Rocketknight1

Library:

- benchmarks: @patrickvonplaten
- deepspeed: @stas00
- ray/raytune: @richardliaw, @amogkam
- text generation: @patrickvonplaten
- tokenizers: @LysandreJik
- trainer: @sgugger
- pipelines: @LysandreJik

Documentation: @sgugger

Model hub:

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- datasets: [different repo](https://github.com/huggingface/datasets)
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- maintained examples (not research project or legacy): @sgugger, @patil-suraj
- research_projects/bert-loses-patience: @JetRunner
- research_projects/distillation: @VictorSanh

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## Information

Model I am using (Bert, XLNet ...):

The problem arises when using:
* [ ] the official example scripts: (give details below)
* [ ] my own modified scripts: (give details below)

The tasks I am working on is:
* [ ] an official GLUE/SQUaD task: (give the name)
* [ ] my own task or dataset: (give details below)

## To reproduce

Steps to reproduce the behavior:

1.
2.
3.

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## Expected behavior

<!-- A clear and concise description of what you would expect to happen. -->

Hello! A new release of sacrebleu was released with breaking changes. Could you reinstall sacrebleu on version 1.5.1 to see if it runs? cc @sgugger <|||||>El El jue, ago. 12, 2021 a la(s) 12:28 a.m., Lysandre Debut <
***@***.***> escribió:

> Hello! A new release of sacrebleu was released with breaking changes.
> Could you reinstall sacrebleu on version 1.5.1 to see if it runs? cc
> @sgugger <https://github.com/sgugger>
>
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<|||||>installing version 1.5.1 solves the problem. thanks!<|||||>Removed Sacrebleu 2.0.0 and installed 1.5.1
It works!<|||||>I used 1.5.1 but faild