bug in run_finetune
## Environment info
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- `transformers` version: 4.3.3
- Platform: linux
- Python version: 3.7
- PyTorch version (GPU?): 1.8 
- 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: @jplu

Library:

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

Documentation: @sgugger

HF projects:

- nlp datasets: [different repo](https://github.com/huggingface/nlp)
- rust tokenizers: [different repo](https://github.com/huggingface/tokenizers)

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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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@patrickvonplaten, @patil-suraj

## Information
I am running  run_seq2seq.py getting 

ImportError: cannot import name 'is_offline_mode' from 'transformers.file_utils'

## To reproduce

Steps to reproduce the behavior:

python run_seq2seq.py


thnaks
sorry my mistake to use last version of examples <|||||>hi how you solved this. i also face this error. i can't find "is_offline_mode"  and "get_full_repo_name" under transformers.utils. i use https://github.com/huggingface/transformers/tree/main/examples/pytorch/summarization<|||||>This should work if you are using `transformers` master/main 