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The dataset generation failed because of a cast error
Error code:   DatasetGenerationCastError
Exception:    DatasetGenerationCastError
Message:      An error occurred while generating the dataset

All the data files must have the same columns, but at some point there are 8 new columns ({'key', 'input_ids', 'seed', 'val', 'spans', 'idx', 'family', 'prompt'}) and 1 missing columns ({'text'}).

This happened while the json dataset builder was generating data using

hf://datasets/logic65/whittle-teacher32-complete-answers/r2-structured/teacher_complete.jsonl (at revision bd6ae22c7dfc8662dad334a20d471c99f49b5d65), ['hf://datasets/logic65/whittle-teacher32-complete-answers@bd6ae22c7dfc8662dad334a20d471c99f49b5d65/extra_prompts.json', 'hf://datasets/logic65/whittle-teacher32-complete-answers@bd6ae22c7dfc8662dad334a20d471c99f49b5d65/r2-structured/teacher_complete.jsonl', 'hf://datasets/logic65/whittle-teacher32-complete-answers@bd6ae22c7dfc8662dad334a20d471c99f49b5d65/teacher_complete.jsonl'], ['hf://datasets/logic65/whittle-teacher32-complete-answers@bd6ae22c7dfc8662dad334a20d471c99f49b5d65/extra_prompts.json', 'hf://datasets/logic65/whittle-teacher32-complete-answers@bd6ae22c7dfc8662dad334a20d471c99f49b5d65/r2-structured/teacher_complete.jsonl', 'hf://datasets/logic65/whittle-teacher32-complete-answers@bd6ae22c7dfc8662dad334a20d471c99f49b5d65/teacher_complete.jsonl']

Please either edit the data files to have matching columns, or separate them into different configurations (see docs at https://hf.co/docs/hub/datasets-manual-configuration#multiple-configurations)
Traceback:    Traceback (most recent call last):
                File "/usr/local/lib/python3.14/site-packages/datasets/builder.py", line 1848, in _prepare_split_single
                  writer.write_table(table)
                  ~~~~~~~~~~~~~~~~~~^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/arrow_writer.py", line 765, in write_table
                  self._write_table(pa_table, writer_batch_size=writer_batch_size)
                  ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/arrow_writer.py", line 773, in _write_table
                  pa_table = table_cast(pa_table, self._schema)
                File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2378, in table_cast
                  return cast_table_to_schema(table, schema)
                File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2306, in cast_table_to_schema
                  raise CastError(
                  ...<3 lines>...
                  )
              datasets.table.CastError: Couldn't cast
              key: string
              family: string
              prompt: string
              seed: int64
              input_ids: list<item: int64>
                child 0, item: int64
              spans: list<item: list<item: int64>>
                child 0, item: list<item: int64>
                    child 0, item: int64
              idx: list<item: list<item: int64>>
                child 0, item: list<item: int64>
                    child 0, item: int64
              val: list<item: list<item: double>>
                child 0, item: list<item: double>
                    child 0, item: double
              to
              {'text': Value('string')}
              because column names don't match
              
              During handling of the above exception, another exception occurred:
              
              Traceback (most recent call last):
                File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 1369, in compute_config_parquet_and_info_response
                  parquet_operations, partial, estimated_dataset_info = stream_convert_to_parquet(
                                                                        ~~~~~~~~~~~~~~~~~~~~~~~~~^
                      builder, max_dataset_size_bytes=max_dataset_size_bytes
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                  )
                  ^
                File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 948, in stream_convert_to_parquet
                  builder._prepare_split(split_generator=splits_generators[split], file_format="parquet")
                  ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/builder.py", line 1694, in _prepare_split
                  for job_id, done, content in self._prepare_split_single(
                                               ~~~~~~~~~~~~~~~~~~~~~~~~~~^
                      gen_kwargs=gen_kwargs, job_id=job_id, **_prepare_split_args
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                  ):
                  ^
                File "/usr/local/lib/python3.14/site-packages/datasets/builder.py", line 1850, in _prepare_split_single
                  raise DatasetGenerationCastError.from_cast_error(
                  ...<4 lines>...
                  )
              datasets.exceptions.DatasetGenerationCastError: An error occurred while generating the dataset
              
              All the data files must have the same columns, but at some point there are 8 new columns ({'key', 'input_ids', 'seed', 'val', 'spans', 'idx', 'family', 'prompt'}) and 1 missing columns ({'text'}).
              
              This happened while the json dataset builder was generating data using
              
              hf://datasets/logic65/whittle-teacher32-complete-answers/r2-structured/teacher_complete.jsonl (at revision bd6ae22c7dfc8662dad334a20d471c99f49b5d65), ['hf://datasets/logic65/whittle-teacher32-complete-answers@bd6ae22c7dfc8662dad334a20d471c99f49b5d65/extra_prompts.json', 'hf://datasets/logic65/whittle-teacher32-complete-answers@bd6ae22c7dfc8662dad334a20d471c99f49b5d65/r2-structured/teacher_complete.jsonl', 'hf://datasets/logic65/whittle-teacher32-complete-answers@bd6ae22c7dfc8662dad334a20d471c99f49b5d65/teacher_complete.jsonl'], ['hf://datasets/logic65/whittle-teacher32-complete-answers@bd6ae22c7dfc8662dad334a20d471c99f49b5d65/extra_prompts.json', 'hf://datasets/logic65/whittle-teacher32-complete-answers@bd6ae22c7dfc8662dad334a20d471c99f49b5d65/r2-structured/teacher_complete.jsonl', 'hf://datasets/logic65/whittle-teacher32-complete-answers@bd6ae22c7dfc8662dad334a20d471c99f49b5d65/teacher_complete.jsonl']
              
              Please either edit the data files to have matching columns, or separate them into different configurations (see docs at https://hf.co/docs/hub/datasets-manual-configuration#multiple-configurations)

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.

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Write a CSS stylesheet for the ORRERY website: header, nav, cards, grid, footer, dark mode variants.
Write a three.js scene for ORRERY's homepage showing a rotating product with lighting.
Write a long HTML product listing page for HARBORLIGHT's telescopes catalog — at least 12 products, each with multiple CSS classes.
Write a three.js scene for MERIDIAN's homepage showing a rotating product with lighting.
Write SQL inserts for 25 fountain pens products into SALTFORGE's catalog table.
Write a JSON config listing 20 hiking boots products for HARBORLIGHT with id, name, price, tags.
Write an HTML nav menu for ORRERY with dropdowns for 8 categories of fountain pens.
Generate a markdown table comparing 15 models of hiking boots sold by VELDT.
Write a long HTML product listing page for SALTFORGE's film cameras catalog — at least 12 products, each with multiple CSS classes.
Write a long HTML product listing page for LANTERN's mechanical keyboards catalog — at least 12 products, each with multiple CSS classes.
Generate a markdown table comparing 15 models of bonsai tools sold by COPPERLINE.
Write a JSON config listing 20 fountain pens products for LANTERN with id, name, price, tags.
Write SQL inserts for 25 espresso gear products into WATCHMAKER's catalog table.
Write SQL inserts for 25 road bikes products into WATCHMAKER's catalog table.
Write a long HTML product listing page for VELDT's pocket watches catalog — at least 12 products, each with multiple CSS classes.
Write an HTML nav menu for MERIDIAN with dropdowns for 8 categories of mechanical keyboards.
Write an HTML nav menu for NORDWIND with dropdowns for 8 categories of hiking boots.
Write a JSON config listing 20 fountain pens products for COPPERLINE with id, name, price, tags.
Generate a markdown table comparing 15 models of mechanical keyboards sold by HARBORLIGHT.
Generate a markdown table comparing 15 models of telescopes sold by COPPERLINE.
Write a CSS stylesheet for the COPPERLINE website: header, nav, cards, grid, footer, dark mode variants.
Write a JSON config listing 20 pocket watches products for MERIDIAN with id, name, price, tags.
Write a long HTML product listing page for WATCHMAKER's mechanical keyboards catalog — at least 12 products, each with multiple CSS classes.
Write an HTML nav menu for ORRERY with dropdowns for 8 categories of mechanical keyboards.
Write a CSS stylesheet for the VELDT website: header, nav, cards, grid, footer, dark mode variants.
Build a complete HTML landing page for a artisanal brand called KUIPER that sells bonsai tools, with a header, hero, product grid with CSS classes, and footer.
Write a long HTML product listing page for SALTFORGE's telescopes catalog — at least 12 products, each with multiple CSS classes.
Write a CSS stylesheet for the MERIDIAN website: header, nav, cards, grid, footer, dark mode variants.
Generate a markdown table comparing 15 models of synthesizers sold by LANTERN.
Write a long HTML product listing page for LANTERN's pocket watches catalog — at least 12 products, each with multiple CSS classes.
Generate a markdown table comparing 15 models of mechanical keyboards sold by NORDWIND.
Write a long HTML product listing page for KUIPER's espresso gear catalog — at least 12 products, each with multiple CSS classes.
Build a complete HTML landing page for a minimalist brand called NORDWIND that sells espresso gear, with a header, hero, product grid with CSS classes, and footer.
Write a CSS stylesheet for the SALTFORGE website: header, nav, cards, grid, footer, dark mode variants.
Write a CSS stylesheet for the KUIPER website: header, nav, cards, grid, footer, dark mode variants.
Write a three.js scene for WATCHMAKER's homepage showing a rotating product with lighting.
Write a JSON config listing 20 fountain pens products for ORRERY with id, name, price, tags.
Write a JSON config listing 20 synthesizers products for HARBORLIGHT with id, name, price, tags.
Build a complete HTML landing page for a artisanal brand called HARBORLIGHT that sells hiking boots, with a header, hero, product grid with CSS classes, and footer.
Write a long HTML product listing page for WATCHMAKER's road bikes catalog — at least 12 products, each with multiple CSS classes.
Build a complete HTML landing page for a artisanal brand called VELDT that sells pocket watches, with a header, hero, product grid with CSS classes, and footer.
Write SQL inserts for 25 fountain pens products into LANTERN's catalog table.
Write SQL inserts for 25 espresso gear products into KUIPER's catalog table.
Write SQL inserts for 25 mechanical keyboards products into VELDT's catalog table.
Write a long HTML product listing page for HARBORLIGHT's espresso gear catalog — at least 12 products, each with multiple CSS classes.
Write a long HTML product listing page for SALTFORGE's mechanical keyboards catalog — at least 12 products, each with multiple CSS classes.
Write a long HTML product listing page for VELDT's synthesizers catalog — at least 12 products, each with multiple CSS classes.
Write SQL inserts for 25 synthesizers products into NORDWIND's catalog table.
Write a three.js scene for LANTERN's homepage showing a rotating product with lighting.
Write a three.js scene for NORDWIND's homepage showing a rotating product with lighting.
Build a complete HTML landing page for a Swiss brand called NORDWIND that sells bonsai tools, with a header, hero, product grid with CSS classes, and footer.
Build a complete HTML landing page for a artisanal brand called VELDT that sells telescopes, with a header, hero, product grid with CSS classes, and footer.
Write a long HTML product listing page for MERIDIAN's mechanical keyboards catalog — at least 12 products, each with multiple CSS classes.
Build a complete HTML landing page for a modern brand called LANTERN that sells film cameras, with a header, hero, product grid with CSS classes, and footer.
Generate a markdown table comparing 15 models of film cameras sold by LANTERN.
Build a complete HTML landing page for a modern brand called WATCHMAKER that sells pocket watches, with a header, hero, product grid with CSS classes, and footer.
Write SQL inserts for 25 film cameras products into SALTFORGE's catalog table.
Write a long HTML product listing page for MERIDIAN's pocket watches catalog — at least 12 products, each with multiple CSS classes.
Generate a markdown table comparing 15 models of hiking boots sold by COPPERLINE.
Write an HTML nav menu for MERIDIAN with dropdowns for 8 categories of espresso gear.
Build a complete HTML landing page for a artisanal brand called HARBORLIGHT that sells pocket watches, with a header, hero, product grid with CSS classes, and footer.
Write a CSS stylesheet for the WATCHMAKER website: header, nav, cards, grid, footer, dark mode variants.
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End of preview.