CLN GH22985 Fixed interpolation with object error message

Author: Pamela Wu

pandas/core/generic.py

@@ -6387,7 +6387,8 @@ def interpolate(self, method='linear', axis=0, limit=None, inplace=False,
 
         if _maybe_transposed_self._data.get_dtype_counts().get(
                 'object') == len(_maybe_transposed_self.T):
-            raise TypeError("Cannot interpolate with all NaNs.")
+            raise TypeError("Cannot interpolate with all objects. Try setting"
+                            "the index dtype to a numeric one.")
 
         # create/use the index
         if method == 'linear':