checked class of values before combine_chunks()

Author: NOBODIDI

pandas/core/arrays/categorical.py

@@ -447,7 +447,10 @@ def __init__(
             if isinstance(values.dtype, ArrowDtype) and issubclass(
                 values.dtype.type, CategoricalDtypeType
             ):
-                arr = values._pa_array.combine_chunks()
+                if values.__class__.__name__ == 'Index':
+                    arr = values._data._pa_array.combine_chunks()
+                else:
+                    arr = values._pa_array.combine_chunks()
                 categories = arr.dictionary.to_pandas(types_mapper=ArrowDtype)
                 codes = arr.indices.to_numpy()
                 dtype = CategoricalDtype(categories, values.dtype.pyarrow_dtype.ordered)