Files not updating in dataset viewer
## Dataset viewer issue for '*name of the dataset*'

**Link:**
Some examples:
* https://huggingface.co/datasets/abidlabs/crowdsourced-speech4
* https://huggingface.co/datasets/abidlabs/test-audio-13

*short description of the issue*
It seems that the dataset viewer is reading a cached version of the dataset and it is not updating to reflect new files that are added to the dataset. I get this error:

![image](https://user-images.githubusercontent.com/1778297/150566660-30dc0dcd-18fd-4471-b70c-7c4bdc6a23c6.png)


Am I the one who added this dataset? Yes