Hello mates

I'm facing a problem during mirror feature.

I'm receiving the following error message: The end face cannot terminate extruded feature. Please recreate the feature using the geometry pattern option if intend to mirror/pattern onto disjoint bodies.

When I check the Geometry Pattern I get another error message saying: The selected feature cannot be patterned using a geometry pattern. Deselect the geometry pattern check box.

Can someone help with that?