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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 2 new columns ({'tasks', 'length'}) and 8 missing columns ({'frame_index', 'index', 'next.done', 'task_index', 'next.reward', 'observation.clock.clock', 'timestamp', 'next.success'}).

This happened while the json dataset builder was generating data using

hf://datasets/Sraghvi/subset-0-universal-lerobot/meta/episodes.json (at revision fda049139c831e7d83045d4e4511190a5e702a52)

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 "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/builder.py", line 1831, in _prepare_split_single
                  writer.write_table(table)
                File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/arrow_writer.py", line 644, in write_table
                  pa_table = table_cast(pa_table, self._schema)
                File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/table.py", line 2272, in table_cast
                  return cast_table_to_schema(table, schema)
                File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/table.py", line 2218, in cast_table_to_schema
                  raise CastError(
              datasets.table.CastError: Couldn't cast
              episode_index: int64
              tasks: list<item: int64>
                child 0, item: int64
              length: int64
              -- schema metadata --
              pandas: '{"index_columns": [], "column_indexes": [], "columns": [{"name":' + 439
              to
              {'index': Value('int64'), 'episode_index': Value('int64'), 'frame_index': Value('int64'), 'timestamp': Value('float64'), 'next.done': Value('bool'), 'next.reward': Value('int64'), 'next.success': Value('bool'), 'task_index': Value('int64'), 'observation.clock.clock': Value('int64')}
              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 1456, in compute_config_parquet_and_info_response
                  parquet_operations = convert_to_parquet(builder)
                File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 1055, in convert_to_parquet
                  builder.download_and_prepare(
                File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/builder.py", line 894, in download_and_prepare
                  self._download_and_prepare(
                File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/builder.py", line 970, in _download_and_prepare
                  self._prepare_split(split_generator, **prepare_split_kwargs)
                File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/builder.py", line 1702, in _prepare_split
                  for job_id, done, content in self._prepare_split_single(
                File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/builder.py", line 1833, in _prepare_split_single
                  raise DatasetGenerationCastError.from_cast_error(
              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 2 new columns ({'tasks', 'length'}) and 8 missing columns ({'frame_index', 'index', 'next.done', 'task_index', 'next.reward', 'observation.clock.clock', 'timestamp', 'next.success'}).
              
              This happened while the json dataset builder was generating data using
              
              hf://datasets/Sraghvi/subset-0-universal-lerobot/meta/episodes.json (at revision fda049139c831e7d83045d4e4511190a5e702a52)
              
              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)

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index int64	frame_index int64	timestamp float64	next.done bool	next.success bool
0	0	0	false	false
1	1	0.1	false	false
2	2	0.2	false	false
3	3	0.3	false	false
4	4	0.4	false	false
5	5	0.5	false	false
6	6	0.6	false	false
7	7	0.7	false	false
8	8	0.8	false	false
9	9	0.9	false	false
10	10	1	false	false
11	11	1.1	false	false
12	12	1.2	false	false
13	13	1.3	false	false
14	14	1.4	false	false
15	15	1.5	false	false
16	16	1.6	false	false
17	17	1.7	false	false
18	18	1.8	false	false
19	19	1.9	false	false
20	20	2	false	false
21	21	2.1	false	false
22	22	2.2	false	false
23	23	2.3	false	false
24	24	2.4	false	false
25	25	2.5	false	false
26	26	2.6	false	false
27	27	2.7	false	false
28	28	2.8	false	false
29	29	2.9	false	false
30	30	3	false	false
31	31	3.1	false	false
32	32	3.2	false	false
33	33	3.3	false	false
34	34	3.4	false	false
35	35	3.5	false	false
36	36	3.6	false	false
37	37	3.7	false	false
38	38	3.8	false	false
39	39	3.9	false	false
40	40	4	false	false
41	41	4.1	false	false
42	42	4.2	false	false
43	43	4.3	false	false
44	44	4.4	false	false
45	45	4.5	false	false
46	46	4.6	false	false
47	47	4.7	false	false
48	48	4.8	false	false
49	49	4.9	false	false
50	50	5	false	false
51	51	5.1	false	false
52	52	5.2	false	false
53	53	5.3	false	false
54	54	5.4	false	false
55	55	5.5	false	false
56	56	5.6	false	false
57	57	5.7	false	false
58	58	5.8	false	false
59	59	5.9	false	false
60	60	6	false	false
61	61	6.1	false	false
62	62	6.2	false	false
63	63	6.3	false	false
64	64	6.4	false	false
65	65	6.5	false	false
66	66	6.6	false	false
67	67	6.7	false	false
68	68	6.8	false	false
69	69	6.9	false	false
70	70	7	false	false
71	71	7.1	false	false
72	72	7.2	false	false
73	73	7.3	false	false
74	74	7.4	false	false
75	75	7.5	false	false
76	76	7.6	false	false
77	77	7.7	false	false
78	78	7.8	false	false
79	79	7.9	false	false
80	80	8	false	false
81	81	8.1	false	false
82	82	8.2	false	false
83	83	8.3	false	false
84	84	8.4	false	false
85	85	8.5	false	false
86	86	8.6	false	false
87	87	8.7	false	false
88	88	8.8	false	false
89	89	8.9	false	false
90	90	9	false	false
91	91	9.1	false	false
92	92	9.2	false	false
93	93	9.3	false	false
94	94	9.4	false	false
95	95	9.5	false	false
96	96	9.6	false	false
97	97	9.7	false	false
98	98	9.8	false	false
99	99	9.9	false	false

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