Could not find file for ZEST dataset
The zest dataset url was changed (allenai/zest#3) and #2057 should resolve this. This has been fixed in #2057 by @matt-peters (thanks again !)

The fix is available on the master branch and we'll do a new release very soon :) Thanks @lhoestq and @matt-peters  I am closing this issue since its fixed!
I am trying to use zest dataset from Allen AI using below code in colab,
```
!pip install -q datasets
from datasets import load_dataset
dataset = load_dataset("zest")
```

I am getting the following error,
```
Using custom data configuration default

Downloading and preparing dataset zest/default (download: 5.53 MiB, generated: 19.96 MiB, post-processed: Unknown size, total: 25.48 MiB) to /root/.cache/huggingface/datasets/zest/default/0.0.0/1f7a230fbfc964d979bbca0f0130fbab3259fce547ee758ad8aa4f9c9bec6cca...
---------------------------------------------------------------------------
FileNotFoundError                         Traceback (most recent call last)
<ipython-input-6-18dbbc1a4b8a> in <module>()
      1 from datasets import load_dataset
      2 
----> 3 dataset = load_dataset("zest")

9 frames
/usr/local/lib/python3.7/dist-packages/datasets/utils/file_utils.py in get_from_cache(url, cache_dir, force_download, proxies, etag_timeout, resume_download, user_agent, local_files_only, use_etag, max_retries, use_auth_token)
    612             )
    613         elif response is not None and response.status_code == 404:
--> 614             raise FileNotFoundError("Couldn't find file at {}".format(url))
    615         _raise_if_offline_mode_is_enabled(f"Tried to reach {url}")
    616         raise ConnectionError("Couldn't reach {}".format(url))

FileNotFoundError: Couldn't find file at https://ai2-datasets.s3-us-west-2.amazonaws.com/zest/zest.zip
```