Update pandas/core/indexes/base.py

Co-authored-by: Richard Shadrach <[email protected]>

Author: natmokval

pandas/core/indexes/base.py

@@ -6872,7 +6872,7 @@ def get_slice_bound(self, label, side: Literal["left", "right"]) -> int:
                     f"Cannot get {side} slice bound for non-monotonic index "
                     f"with a missing label {original_label!r}. "
                     "Either sort the index or specify an existing label."
-                ) from err
+                ) from None
 
         if isinstance(slc, np.ndarray):
             # get_loc may return a boolean array, which