in filter() In argument num children 0 Caused by error object 'num children' not found Run rlang last trace() to see where the error occurred use the variables name in this chart and the name of dataset is obj csv

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in  filter()   In argument   num children   0   Caused by error    object 'num children' not found Run  rlang  last trace()  to see where the error occurred  use the variables name in this chart and the name of dataset is obj csv

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Question: in `filter()`: In argument: `num_children > 0`. Caused by error: ! object 'num_children' not found Run `rlang::last_trace()` to see where the error occurred. use the

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