Error code:   JWTInvalidSignature
Exception:    InvalidSignatureError
Message:      Signature verification failed
Traceback:    Traceback (most recent call last):
                File "/src/libs/libapi/src/libapi/jwt_token.py", line 286, in validate_jwt
                  decoded = jwt.decode(
                      jwt=token,
                  ...<2 lines>...
                      options=options,
                  )
                File "/usr/local/lib/python3.14/site-packages/jwt/api_jwt.py", line 368, in decode
                  decoded = self.decode_complete(
                      jwt,
                  ...<8 lines>...
                      leeway=leeway,
                  )
                File "/usr/local/lib/python3.14/site-packages/jwt/api_jwt.py", line 265, in decode_complete
                  decoded = self._jws.decode_complete(
                      jwt,
                  ...<3 lines>...
                      detached_payload=detached_payload,
                  )
                File "/usr/local/lib/python3.14/site-packages/jwt/api_jws.py", line 270, in decode_complete
                  self._verify_signature(
                  ~~~~~~~~~~~~~~~~~~~~~~^
                      signing_input,
                      ^^^^^^^^^^^^^^
                  ...<4 lines>...
                      options=merged_options,
                      ^^^^^^^^^^^^^^^^^^^^^^^
                  )
                  ^
                File "/usr/local/lib/python3.14/site-packages/jwt/api_jws.py", line 417, in _verify_signature
                  raise InvalidSignatureError("Signature verification failed")
              jwt.exceptions.InvalidSignatureError: Signature verification failed

Need help to make the dataset viewer work? Make sure to review how to configure the dataset viewer, and open a discussion for direct support.

Test Dataset: viewer-test-15-large-images-ok

Purpose: Demonstrate dataset viewer behavior with large images and row group sizing.

Dataset Details

Number of images: 15
Total size: ~188MB
Average per image: ~12.6MB

Expected Behavior

15 large images (~14MB each, ~210MB total). Under the 300MB limit, so the viewer should work.

Prediction: SHOULD WORK - Under 300MB limit

Technical Context

The dataset viewer converts imagefolder datasets to parquet with:

Row group size: 100 rows (for image datasets)
Scan size limit: 300MB

If all images end up in one row group and exceed 300MB, the viewer fails with:

Scan size limit exceeded: attempted to read X bytes, limit is 300000000 bytes

Related Issue

This dataset was created to help debug row group sizing for large images. See: https://github.com/huggingface/dataset-viewer for context.

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