mp.second_order cannot generate second-order units

[sgrlifire]

Why can't I generate the vol file of the second-order element after using (mp.uselocalh = 1; mp.elementsperedge = 2.0; mp.elementspercurve = 2.0; mp.maxh = 10.0; mp.grading = 0.2; mp.closeedgeenable = 0; mp.closeedgefact = 1.0; mp.optsurfmeshenable = 1; mp.second_order = 1; )

[sgrlifire]

ng_occ.zip Using this example, add mp.second_order = 1; Second-order elements cannot be generated