# Datasets Viewer RowPostProcessingError

**URL:** <https://discuss.huggingface.co/t/datasets-viewer-rowpostprocessingerror/168923>\
**Category:** Beginners\
**Created:** [October 5, 2025, 7:30pm UTC](https://discuss.huggingface.co/t/datasets-viewer-rowpostprocessingerror/168923 "2025-10-05T19:30:25Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![chanchungkit](https://avatars.discourse-cdn.com/v4/letter/c/958977/32.png) [@chanchungkit](https://discuss.huggingface.co/u/chanchungkit)\
**Post date:** [October 5, 2025, 7:30pm UTC](https://discuss.huggingface.co/t/datasets-viewer-rowpostprocessingerror/168923/1 "2025-10-05T19:30:25Z")

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I had uploaded a large audio datasets. However in the viewer, I had encountered RowPostProcessingError. If I changed the README.md eg. include all parquet files or switch to \*.parquet, it will show the audio preview for a while and after that it show the error again. This error seem to only impact the preview, it does not impact if I use the API load\_datasets, I can load it to my computer successfully. Appreciate any tip and guide to help to fix this error.

Thanks in advance!

 ![image](https://us1.discourse-cdn.com/hellohellohello/original/3X/b/4/b41754a6c48eee50f3fd6893e375477d32ccdc61.jpeg)

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**Author:** ![John6666](https://sea2.discourse-cdn.com/hellohellohello/user_avatar/discuss.huggingface.co/john6666/32/27664_2.png) [@John6666](https://discuss.huggingface.co/u/John6666)\
**Post date:** [October 6, 2025, 12:11am UTC](https://discuss.huggingface.co/t/datasets-viewer-rowpostprocessingerror/168923/2 "2025-10-06T00:11:56Z")

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When accessing [the dataset](https://datasets-server.huggingface.co/rows?dataset=chanchungkit/IMDA-NSC-datasets&config=default&split=train&offset=0&length=100), I got: `{"error":"Server error while post-processing the split rows. Please report the issue."}`. Seems Dataset Viewer Issue… Audio related one? @lhoestq

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**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:** [October 7, 2025, 2:07pm UTC](https://discuss.huggingface.co/t/datasets-viewer-rowpostprocessingerror/168923/3 "2025-10-07T14:07:29Z")

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Thanks for reporting, I found the issue on our side and I’m working on a [fix](https://github.com/huggingface/dataset-viewer/pull/3234) 🙂

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<div class="post-metadata">

**Author:** ![chanchungkit](https://avatars.discourse-cdn.com/v4/letter/c/958977/32.png) [@chanchungkit](https://discuss.huggingface.co/u/chanchungkit)\
**Post date:** [October 9, 2025, 2:59am UTC](https://discuss.huggingface.co/t/datasets-viewer-rowpostprocessingerror/168923/4 "2025-10-09T02:59:51Z")

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I am able to play some of the audio file in datasets viewer, however majority of the audio file encounter the following error:

 ![image](https://us1.discourse-cdn.com/hellohellohello/original/3X/3/1/317182d5957aaf10cb3a17af967a3bf4591f033c.jpeg)