# Dataset Viewer issue: ConfigNamesError

**URL:** <https://discuss.huggingface.co/t/dataset-viewer-issue-confignameserror/176738>\
**Category:** 🤗Datasets\
**Created:** [June 12, 2026, 11:19am UTC](https://discuss.huggingface.co/t/dataset-viewer-issue-confignameserror/176738 "2026-06-12T11:19:34Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![VINAY-UMRETHE](https://sea2.discourse-cdn.com/hellohellohello/user_avatar/discuss.huggingface.co/vinay-umrethe/32/60661_2.png) [@VINAY-UMRETHE](https://discuss.huggingface.co/u/VINAY-UMRETHE)\
**Post date:** [June 12, 2026, 11:19am UTC](https://discuss.huggingface.co/t/dataset-viewer-issue-confignameserror/176738/1 "2026-06-12T11:19:35Z")

</div>

The dataset viewer is not working.

Error details:

```auto
Error code: ConfigNamesError
Exception: ValueError
Message: Feature type 'Mesh' not found. Available feature types: ['Value', 'ClassLabel', 'Translation', 'TranslationVariableLanguages', 'LargeList', 'List', 'Array2D', 'Array3D', 'Array4D', 'Array5D', 'Audio', 'Image', 'Video', 'Pdf', 'Nifti', 'Json']
Traceback: Traceback (most recent call last):
                File "/src/services/worker/src/worker/job_runners/dataset/config_names.py", line 67, in compute_config_names_response
                  config_names = get_dataset_config_names(
                                 ^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/inspect.py", line 161, in get_dataset_config_names
                  dataset_module = dataset_module_factory(
                                   ^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/load.py", line 1207, in dataset_module_factory
                  raise e1 from None
                File "/usr/local/lib/python3.12/site-packages/datasets/load.py", line 1182, in dataset_module_factory
                  ).get_module()
                    ^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/load.py", line 612, in get_module
                  dataset_infos = DatasetInfosDict.from_dataset_card_data(dataset_card_data)
                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/info.py", line 396, in from_dataset_card_data
                  dataset_info = DatasetInfo._from_yaml_dict(dataset_card_data["dataset_info"])
                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/info.py", line 317, in _from_yaml_dict
                  yaml_data["features"] = Features._from_yaml_list(yaml_data["features"])
                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/features/features.py", line 2138, in _from_yaml_list
                  return cls.from_dict(from_yaml_inner(yaml_data))
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/features/features.py", line 1983, in from_dict
                  obj = generate_from_dict(dic)
                        ^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/features/features.py", line 1564, in generate_from_dict
                  return {key: generate_from_dict(value) for key, value in obj.items()}
                               ^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/features/features.py", line 1570, in generate_from_dict
                  raise ValueError(f"Feature type '{_type}' not found. Available feature types: {list(_FEATURE_TYPES.keys())}")
              ValueError: Feature type 'Mesh' not found. Available feature types: ['Value', 'ClassLabel', 'Translation', 'TranslationVariableLanguages', 'LargeList', 'List', 'Array2D', 'Array3D', 'Array4D', 'Array5D', 'Audio', 'Image', 'Video', 'Pdf', 'Nifti', 'Json']

```

Also the offical `datasets` documentation is not updated to v5.0.0, [Datasets · Hugging Face](https://huggingface.co/docs/datasets/en/index) it’s still at v4.8.4

cc @lhoestq @cfahlgren1.

---

<div class="post-metadata">

**Author:** ![lhoestq](https://sea2.discourse-cdn.com/hellohellohello/user_avatar/discuss.huggingface.co/lhoestq/32/52888_2.png) [@lhoestq](https://discuss.huggingface.co/u/lhoestq)\
**Post date:** [June 12, 2026, 11:39am UTC](https://discuss.huggingface.co/t/dataset-viewer-issue-confignameserror/176738/2 "2026-06-12T11:39:12Z")

</div>

Thanks for reporting ! I’ll try to get the viewer’s backend updated for mesh features soon. Then I’m not sure front-end side what we should show yet.

I’ll also check why the docs are updated yet

---

<div class="post-metadata">

**Author:** ![VINAY-UMRETHE](https://sea2.discourse-cdn.com/hellohellohello/user_avatar/discuss.huggingface.co/vinay-umrethe/32/60661_2.png) [@VINAY-UMRETHE](https://discuss.huggingface.co/u/VINAY-UMRETHE)\
**Post date:** [June 21, 2026, 3:08am UTC](https://discuss.huggingface.co/t/dataset-viewer-issue-confignameserror/176738/4 "2026-06-21T03:08:49Z")

</div>

any updates? @lhoestq

The docs page is still not updated and remains at `v4.8.4` in both docs and backend of Hugging Face Hub

 ![Screenshot](https://us1.discourse-cdn.com/hellohellohello/original/3X/0/3/03861342f490f9b9c6487a0c67ce62b5634b4d19.png)