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Cannot load the dataset split (in streaming mode) to extract the first rows.
Error code:   StreamingRowsError
Exception:    CastError
Message:      Couldn't cast
instruction: string
output: string
language: string
framework: string
source: string
license: string
reasoning: string
total_downloaded: int64
duplicates: int64
file_mb: double
timestamp: string
total_removed: int64
per_dataset: struct<Tesslate/Next.js-Dataset: struct<downloaded: int64, invalid: int64, deprecated: int64, low_qu (... 1389 chars omitted)
  child 0, Tesslate/Next.js-Dataset: struct<downloaded: int64, invalid: int64, deprecated: int64, low_quality: int64, duplicates: int64,  (... 12 chars omitted)
      child 0, downloaded: int64
      child 1, invalid: int64
      child 2, deprecated: int64
      child 3, low_quality: int64
      child 4, duplicates: int64
      child 5, kept: int64
  child 1, cfahlgren1/react-code-instructions: struct<downloaded: int64, invalid: int64, deprecated: int64, low_quality: int64, duplicates: int64,  (... 12 chars omitted)
      child 0, downloaded: int64
      child 1, invalid: int64
      child 2, deprecated: int64
      child 3, low_quality: int64
      child 4, duplicates: int64
      child 5, kept: int64
  child 2, itryv/gwen-frontend-dataset: struct<downloaded: int64, invalid: int64, deprecated: int64, low_quality: int64, duplicates: int64,  (... 12 chars omitted)
      child 0, downloaded: int64
      child 1, invalid: int64
      child 2, deprecated: int64
      child 3, low_quality: int64
      child 4, duplicates: int64
      child 5, kept: int64
  child 3, summykai/react-hook-form-sft-dataset: struct<downloaded: int64, inva
...
uplicates: int64
      child 5, kept: int64
  child 6, JulianAT/SynthUI-Code-2k-v1: struct<downloaded: int64, invalid: int64, deprecated: int64, low_quality: int64, duplicates: int64,  (... 12 chars omitted)
      child 0, downloaded: int64
      child 1, invalid: int64
      child 2, deprecated: int64
      child 3, low_quality: int64
      child 4, duplicates: int64
      child 5, kept: int64
  child 7, runanlab/gpt-5.4-frontend-development-11062026: struct<downloaded: int64, invalid: int64, deprecated: int64, low_quality: int64, duplicates: int64,  (... 12 chars omitted)
      child 0, downloaded: int64
      child 1, invalid: int64
      child 2, deprecated: int64
      child 3, low_quality: int64
      child 4, duplicates: int64
      child 5, kept: int64
  child 8, Tensoic/FrontendCookbook: struct<downloaded: int64, invalid: int64, deprecated: int64, low_quality: int64, duplicates: int64,  (... 12 chars omitted)
      child 0, downloaded: int64
      child 1, invalid: int64
      child 2, deprecated: int64
      child 3, low_quality: int64
      child 4, duplicates: int64
      child 5, kept: int64
  child 9, Reubencf/frontend-html-tailwind-js: struct<downloaded: int64, invalid: int64, deprecated: int64, low_quality: int64, duplicates: int64,  (... 12 chars omitted)
      child 0, downloaded: int64
      child 1, invalid: int64
      child 2, deprecated: int64
      child 3, low_quality: int64
      child 4, duplicates: int64
      child 5, kept: int64
final_size: int64
to
{'timestamp': Value('string'), 'total_downloaded': Value('int64'), 'total_removed': Value('int64'), 'duplicates': Value('int64'), 'final_size': Value('int64'), 'file_mb': Value('float64'), 'per_dataset': {'Tesslate/Next.js-Dataset': {'downloaded': Value('int64'), 'invalid': Value('int64'), 'deprecated': Value('int64'), 'low_quality': Value('int64'), 'duplicates': Value('int64'), 'kept': Value('int64')}, 'cfahlgren1/react-code-instructions': {'downloaded': Value('int64'), 'invalid': Value('int64'), 'deprecated': Value('int64'), 'low_quality': Value('int64'), 'duplicates': Value('int64'), 'kept': Value('int64')}, 'itryv/gwen-frontend-dataset': {'downloaded': Value('int64'), 'invalid': Value('int64'), 'deprecated': Value('int64'), 'low_quality': Value('int64'), 'duplicates': Value('int64'), 'kept': Value('int64')}, 'summykai/react-hook-form-sft-dataset': {'downloaded': Value('int64'), 'invalid': Value('int64'), 'deprecated': Value('int64'), 'low_quality': Value('int64'), 'duplicates': Value('int64'), 'kept': Value('int64')}, 'valentin-marquez/react-shadcn-codex': {'downloaded': Value('int64'), 'invalid': Value('int64'), 'deprecated': Value('int64'), 'low_quality': Value('int64'), 'duplicates': Value('int64'), 'kept': Value('int64')}, 'JulianAT/SynthUI-Code-Instruct-2k-v1': {'downloaded': Value('int64'), 'invalid': Value('int64'), 'deprecated': Value('int64'), 'low_quality': Value('int64'), 'duplicates': Value('int64'), 'kept': Value('int64')}, 'JulianAT/SynthUI-Code-2k-v1': {'downloaded': Value('int64'), 'invalid': Value('int64'), 'deprecated': Value('int64'), 'low_quality': Value('int64'), 'duplicates': Value('int64'), 'kept': Value('int64')}, 'runanlab/gpt-5.4-frontend-development-11062026': {'downloaded': Value('int64'), 'invalid': Value('int64'), 'deprecated': Value('int64'), 'low_quality': Value('int64'), 'duplicates': Value('int64'), 'kept': Value('int64')}, 'Tensoic/FrontendCookbook': {'downloaded': Value('int64'), 'invalid': Value('int64'), 'deprecated': Value('int64'), 'low_quality': Value('int64'), 'duplicates': Value('int64'), 'kept': Value('int64')}, 'Reubencf/frontend-html-tailwind-js': {'downloaded': Value('int64'), 'invalid': Value('int64'), 'deprecated': Value('int64'), 'low_quality': Value('int64'), 'duplicates': Value('int64'), 'kept': Value('int64')}}}
because column names don't match
Traceback:    Traceback (most recent call last):
                File "/src/services/worker/src/worker/utils.py", line 147, in get_rows_or_raise
                  return get_rows(
                      dataset=dataset,
                  ...<4 lines>...
                      column_names=column_names,
                  )
                File "/src/libs/libcommon/src/libcommon/utils.py", line 272, in decorator
                  return func(*args, **kwargs)
                File "/src/services/worker/src/worker/utils.py", line 127, in get_rows
                  rows_plus_one = list(itertools.islice(safe_iter(ds, dataset=dataset), rows_max_number + 1))
                File "/src/services/worker/src/worker/utils.py", line 478, in safe_iter
                  yield from ds.decode(False) if ds.features else ds
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2818, in __iter__
                  for key, example in ex_iterable:
                                      ^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2355, in __iter__
                  for key, pa_table in self._iter_arrow():
                                       ~~~~~~~~~~~~~~~~^^
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2380, in _iter_arrow
                  for key, pa_table in self.ex_iterable._iter_arrow():
                                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 536, in _iter_arrow
                  for key, pa_table in iterator:
                                       ^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 419, in _iter_arrow
                  for key, pa_table in self.generate_tables_fn(**gen_kwags):
                                       ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 343, in _generate_tables
                  self._cast_table(pa_table, json_field_paths=json_field_paths),
                  ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 132, in _cast_table
                  pa_table = table_cast(pa_table, self.info.features.arrow_schema)
                File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2369, in table_cast
                  return cast_table_to_schema(table, schema)
                File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2297, in cast_table_to_schema
                  raise CastError(
                  ...<3 lines>...
                  )
              datasets.table.CastError: Couldn't cast
              instruction: string
              output: string
              language: string
              framework: string
              source: string
              license: string
              reasoning: string
              total_downloaded: int64
              duplicates: int64
              file_mb: double
              timestamp: string
              total_removed: int64
              per_dataset: struct<Tesslate/Next.js-Dataset: struct<downloaded: int64, invalid: int64, deprecated: int64, low_qu (... 1389 chars omitted)
                child 0, Tesslate/Next.js-Dataset: struct<downloaded: int64, invalid: int64, deprecated: int64, low_quality: int64, duplicates: int64,  (... 12 chars omitted)
                    child 0, downloaded: int64
                    child 1, invalid: int64
                    child 2, deprecated: int64
                    child 3, low_quality: int64
                    child 4, duplicates: int64
                    child 5, kept: int64
                child 1, cfahlgren1/react-code-instructions: struct<downloaded: int64, invalid: int64, deprecated: int64, low_quality: int64, duplicates: int64,  (... 12 chars omitted)
                    child 0, downloaded: int64
                    child 1, invalid: int64
                    child 2, deprecated: int64
                    child 3, low_quality: int64
                    child 4, duplicates: int64
                    child 5, kept: int64
                child 2, itryv/gwen-frontend-dataset: struct<downloaded: int64, invalid: int64, deprecated: int64, low_quality: int64, duplicates: int64,  (... 12 chars omitted)
                    child 0, downloaded: int64
                    child 1, invalid: int64
                    child 2, deprecated: int64
                    child 3, low_quality: int64
                    child 4, duplicates: int64
                    child 5, kept: int64
                child 3, summykai/react-hook-form-sft-dataset: struct<downloaded: int64, inva
              ...
              uplicates: int64
                    child 5, kept: int64
                child 6, JulianAT/SynthUI-Code-2k-v1: struct<downloaded: int64, invalid: int64, deprecated: int64, low_quality: int64, duplicates: int64,  (... 12 chars omitted)
                    child 0, downloaded: int64
                    child 1, invalid: int64
                    child 2, deprecated: int64
                    child 3, low_quality: int64
                    child 4, duplicates: int64
                    child 5, kept: int64
                child 7, runanlab/gpt-5.4-frontend-development-11062026: struct<downloaded: int64, invalid: int64, deprecated: int64, low_quality: int64, duplicates: int64,  (... 12 chars omitted)
                    child 0, downloaded: int64
                    child 1, invalid: int64
                    child 2, deprecated: int64
                    child 3, low_quality: int64
                    child 4, duplicates: int64
                    child 5, kept: int64
                child 8, Tensoic/FrontendCookbook: struct<downloaded: int64, invalid: int64, deprecated: int64, low_quality: int64, duplicates: int64,  (... 12 chars omitted)
                    child 0, downloaded: int64
                    child 1, invalid: int64
                    child 2, deprecated: int64
                    child 3, low_quality: int64
                    child 4, duplicates: int64
                    child 5, kept: int64
                child 9, Reubencf/frontend-html-tailwind-js: struct<downloaded: int64, invalid: int64, deprecated: int64, low_quality: int64, duplicates: int64,  (... 12 chars omitted)
                    child 0, downloaded: int64
                    child 1, invalid: int64
                    child 2, deprecated: int64
                    child 3, low_quality: int64
                    child 4, duplicates: int64
                    child 5, kept: int64
              final_size: int64
              to
              {'timestamp': Value('string'), 'total_downloaded': Value('int64'), 'total_removed': Value('int64'), 'duplicates': Value('int64'), 'final_size': Value('int64'), 'file_mb': Value('float64'), 'per_dataset': {'Tesslate/Next.js-Dataset': {'downloaded': Value('int64'), 'invalid': Value('int64'), 'deprecated': Value('int64'), 'low_quality': Value('int64'), 'duplicates': Value('int64'), 'kept': Value('int64')}, 'cfahlgren1/react-code-instructions': {'downloaded': Value('int64'), 'invalid': Value('int64'), 'deprecated': Value('int64'), 'low_quality': Value('int64'), 'duplicates': Value('int64'), 'kept': Value('int64')}, 'itryv/gwen-frontend-dataset': {'downloaded': Value('int64'), 'invalid': Value('int64'), 'deprecated': Value('int64'), 'low_quality': Value('int64'), 'duplicates': Value('int64'), 'kept': Value('int64')}, 'summykai/react-hook-form-sft-dataset': {'downloaded': Value('int64'), 'invalid': Value('int64'), 'deprecated': Value('int64'), 'low_quality': Value('int64'), 'duplicates': Value('int64'), 'kept': Value('int64')}, 'valentin-marquez/react-shadcn-codex': {'downloaded': Value('int64'), 'invalid': Value('int64'), 'deprecated': Value('int64'), 'low_quality': Value('int64'), 'duplicates': Value('int64'), 'kept': Value('int64')}, 'JulianAT/SynthUI-Code-Instruct-2k-v1': {'downloaded': Value('int64'), 'invalid': Value('int64'), 'deprecated': Value('int64'), 'low_quality': Value('int64'), 'duplicates': Value('int64'), 'kept': Value('int64')}, 'JulianAT/SynthUI-Code-2k-v1': {'downloaded': Value('int64'), 'invalid': Value('int64'), 'deprecated': Value('int64'), 'low_quality': Value('int64'), 'duplicates': Value('int64'), 'kept': Value('int64')}, 'runanlab/gpt-5.4-frontend-development-11062026': {'downloaded': Value('int64'), 'invalid': Value('int64'), 'deprecated': Value('int64'), 'low_quality': Value('int64'), 'duplicates': Value('int64'), 'kept': Value('int64')}, 'Tensoic/FrontendCookbook': {'downloaded': Value('int64'), 'invalid': Value('int64'), 'deprecated': Value('int64'), 'low_quality': Value('int64'), 'duplicates': Value('int64'), 'kept': Value('int64')}, 'Reubencf/frontend-html-tailwind-js': {'downloaded': Value('int64'), 'invalid': Value('int64'), 'deprecated': Value('int64'), 'low_quality': Value('int64'), 'duplicates': Value('int64'), 'kept': Value('int64')}}}
              because column names don't match

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