Can't upload a dataset in playground when running locally

[saeedesmaili]

I cloned the project and running the playground locally. The UI works fine, except I'm not sure how I'm supposed to add datasets when running locally.

• I tried "Upload Local Dataset", but when I select a json file from my machine I get the following error:

• I also tried "Upload Files or Folder" -> "Local Server", but json files can't be selected in this mode.

[shabie]

Can you share the shape i.e. a few first records of your dataset file?

[saeedesmaili]

I don't think this issue has anything to do with my dataset. I get the same exact error when I try "Upload Remote Dataset" and enter your sample dataset mentioned in the tutorial.

[shabie]

Okay. Will check.

[shreyashankar]

Sorry for the delay in response! Have you set environment variables in .env and website/.env.local?

Check out https://github.com/ucbepic/docetl/blob/main/.env.sample and https://github.com/ucbepic/docetl/blob/main/website/.env.local.sample respectively (but name them .env and .env.local)

[saeedesmaili]

@shreyashankar Thanks for the response. I already had the .env file, and just added the .env.local file (copied the values from .env.local.sample), but the issue hasn't been resolved. It seems to be a frontend issue, since the backend logs doesn't show any requests getting there, the browser inspector's network tab doesn't show any requests neither, and the console tab has the following:

[shreyashankar]

the undefined:undefined makes me believe the FE cannot read NEXT_PUBLIC_BACKEND_HOST or NEXT_PUBLIC_BACKEND_PORT. just confirming the .env.local is in the website directory?

[saeedesmaili]

@shreyashankar ah, no it actually was in the root directory, I moved it to /website and the undefined ... issue seems to be fixed (not sure if this was mentioned somewhere and I have missed or should it be added to the docs that this file should be in the /website directory, it is obvious from the sample files in hindsight).

But now I have a CORS error when attempting to upload a file:

I'm trying "upload remote dataset" with this url https://raw.githubusercontent.com/ucbepic/docetl/refs/heads/main/example_data/debates/data.json.