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400 Errors when hitting API endpoint alpha/site (lemmy.world)
submitted 1 year ago* (last edited 1 year ago) by idunnololz@lemmy.world to c/piefed_api@piefed.social
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Hello! I am getting 400 errors when hitting the piefed.social. Hitting other piefed instances appear to work.

The exact error I get is:

{"code":400,"message":"{'my_user': {'instance_blocks': {0: {'site': ['Missing data for required field.']}}}}","status":"Bad Request"}

As an example I get this error when I make a GET request to https://piefed.social/api/alpha/site.

Note that I am making with request without an Authorization header.

Update

It seems that only alpha/site endpoint is broken. I can GET https://piefed.social/api/alpha/federated_instances just fine.

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[-] wjs018@piefed.wjs018.xyz 2 points 1 year ago* (last edited 1 year ago)

Ok, I was able to reproduce this and made a PR for a fix. This issue only pops up when a user has instance blocks and works fine otherwise, which is why others in this thread (and myself when I was testing) aren't running into issues.

The root cause really is that I was creating schema for input and output validation to match the manually created swagger docs, but the output for instance_blocks was different than specified (and I marked it as a required field, likely from a copy/paste error). So, thanks for helping us as we are going through endpoints and making them self-documenting.

[-] idunnololz@lemmy.world 1 points 1 year ago

Thank you!

this post was submitted on 25 Jul 2025
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