@sgugger Hello! I just tried to run the code to explore this example https://github.com/huggingface/transformers/blob/main/examples/pytorch/summarization/run_summarization_no_trainer.py

this is my yml file to build the env

name: sum

channels:

• pytorch
• conda-forge
• defaults

dependencies:

• jupyterlab
• pip
• python=3.9
• pytorch
• tensorboard
• torchaudio
• torchvision
• tqdm
• tokenizers
• prettytable
• einops
• matplotlib
• accelerate
• datasets
• sentencepiece != 0.1.92
• protobuf
• nltk
• py7zr
• transformers

then pip install rouge-score

after that simply I ran thhe command

accelerate launch run_summarization_no_trainer.py --model_name_or_path t5-small --dataset_name cnn_dailymail --dataset_config '3.0.0' --source_prefix 'summarize: ' --output_dir output/tst-summarization

and got the error

Traceback (most recent call last):
File "/home/arij/anaconda3/envs/sum/bin/accelerate", line 10, in
sys.exit(main())
File "/home/arij/anaconda3/envs/sum/lib/python3.9/site-packages/accelerate/commands/accelerate_cli.py", line 43, in main
args.func(args)
File "/home/arij/anaconda3/envs/sum/lib/python3.9/site-packages/accelerate/commands/launch.py", line 568, in launch_command
simple_launcher(args)
File "/home/arij/anaconda3/envs/sum/lib/python3.9/site-packages/accelerate/commands/launch.py", line 235, in simple_launcher
mixed_precision = PrecisionType(args.mixed_precision.lower())
AttributeError: 'NoneType' object has no attribute 'lower'

How to fix it?