I encountered this same issue. Apparently, when the welder cup and weld wire are touching the part at the same time, you will get this error. 18224 is an error message resulting from continuity between the weld cup and the weld wire.
I encountered this same issue. Apparently, when the welder cup and weld wire are touching the part at the same time, you will get this error. 18224 is an error message resulting from continuity between the weld cup and the weld wire.