ConnectionError: Couldn't reach common_voice.py
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Hi @LifaSun, thanks for reporting this issue.

Sometimes, GitHub has some connectivity problems. Could you confirm that the problem persists?
2021-03-18T09:10:51Z
https://github.com/huggingface/datasets/issues/2075#issuecomment-801757938
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@albertvillanova Thanks! It works well now. 
2021-03-20T10:29:38Z
https://github.com/huggingface/datasets/issues/2075#issuecomment-803287004
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When I run: 
from datasets import load_dataset, load_metric

common_voice_train = load_dataset("common_voice", "zh-CN", split="train+validation")
common_voice_test = load_dataset("common_voice", "zh-CN", split="test")

Got:
ConnectionError: Couldn't reach https://raw.githubusercontent.com/huggingface/datasets/master/datasets/common_voice/common_voice.py

Version:
1.4.1

Thanks!  @lhoestq @LysandreJik @thomwolf 