# Datasets Viewer RowPostProcessingError
**URL:**
**Author:**  [@chanchungkit](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2Fchanchungkit)%5C
**Post date:** [October 5, 2025, 7:30pm UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fdatasets-viewer-rowpostprocessingerror%2F168923%2F1 "2025-10-05T19:30:25Z")
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!
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**Author:**  [@John6666](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2FJohn6666)%5C
**Post date:** [October 6, 2025, 12:11am UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fdatasets-viewer-rowpostprocessingerror%2F168923%2F2 "2025-10-06T00:11:56Z")
When accessing [the dataset](/static-proxy?url=https%3A%2F%2Fdatasets-server.huggingface.co%2Frows%3Fdataset%3Dchanchungkit%2FIMDA-NSC-datasets%26config%3Ddefault%26split%3Dtrain%26offset%3D0%26length%3D100)%2C 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](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2Flhoestq)%5C
**Post date:** [October 7, 2025, 2:07pm UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fdatasets-viewer-rowpostprocessingerror%2F168923%2F3 "2025-10-07T14:07:29Z")
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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**Author:**  [@chanchungkit](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2Fchanchungkit)%5C
**Post date:** [October 9, 2025, 2:59am UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fdatasets-viewer-rowpostprocessingerror%2F168923%2F4 "2025-10-09T02:59:51Z")
I am able to play some of the audio file in datasets viewer, however majority of the audio file encounter the following error:
