Fix DatasetGenerationError

✅ Solution

DatasetGenerationError often arises from unsupported data types or nested structures when creating or converting datasets, especially with chunked arrays or specific file formats like webdataset. Ensure that your data types are compatible with the dataset format and that you flatten or convert complex nested structures like deeply nested dictionaries or lists of dictionaries to simpler, serializable types like strings or numpy arrays before dataset creation. Consider using `datasets.features.Features` to explicitly define the expected schema and data types, enabling automatic type coercion during dataset creation.