ant: error when thickness or width are missing
ant: error when thickness or width are missing

Signed-off-by: Ramez Moussa <31f67fa75cb47980376975de8e4b206285aba5fb@aucegypt.edu>

The-OpenROAD-Project/OpenROAD,QuantamHD/OpenROAD,QuantamHD/OpenROAD,The-OpenROAD-Project/OpenROAD,QuantamHD/OpenROAD,QuantamHD/OpenROAD,The-OpenROAD-Project/OpenROAD,QuantamHD/OpenROAD,The-OpenROAD-Project/OpenROAD,The-OpenROAD-Project/OpenROAD