* thread #1, name = 'amr_wind', stop reason = signal SIGFPE: floating point invalid operation
    frame #0: 0x000055555647d923 amr_wind`amr_wind::ocean_waves::relaxation_zones::update_target_vof(amr_wind::CFDSim&)::$_0::operator()(int, int, int, int) const [inlined] amr_wind::multiphase::levelset_to_vof(i=96, j=96, k=-1, eps=20.833333333333336, phi=0x0000555567e29040) at volume_fractions.H:534:13
   531      my = std::abs(my / 32.);
   532      mz = std::abs(mz / 32.);
   533      amrex::Real normL1 = (mx + my + mz);
-> 534      mx = mx / normL1;
   535      my = my / normL1;
   536      mz = mz / normL1;
   537      // Make sure that alpha is negative far away from the
(lldb) bt
* thread #1, name = 'amr_wind', stop reason = signal SIGFPE: floating point invalid operation
  * frame #0: 0x000055555647d923 amr_wind`amr_wind::ocean_waves::relaxation_zones::update_target_vof(amr_wind::CFDSim&)::$_0::operator()(int, int, int, int) const [inlined] amr_wind::multiphase::levelset_to_vof(i=96, j=96, k=-1, eps=20.833333333333336, phi=0x0000555567e29040) at volume_fractions.H:534:13
    frame #1: 0x000055555647abb0 amr_wind`amr_wind::ocean_waves::relaxation_zones::update_target_vof(amr_wind::CFDSim&)::$_0::operator()(this=0x00007fffffff1380, nbx=8, i=96, j=96, k=-1) const at relaxation_zones_ops.cpp:67:21
    frame #2: 0x000055555647aaa9 amr_wind`std::enable_if<IsFabArray<amrex::MultiFab>::value, void>::type amrex::experimental::detail::ParallelFor<amrex::MultiFab, amr_wind::ocean_waves::relaxation_zones::update_target_vof(amr_wind::CFDSim&)::$_0>(mf=0x000055555c9e7018, nghost=0x00007fffffff139c, ts=0x00007ffff117c3dc, dynamic=false, f=0x00007fffffff1380) at AMReX_MFParallelForC.H:27:21
    frame #3: 0x0000555556479dce amr_wind`std::enable_if<IsFabArray<amrex::MultiFab>::value, void>::type amrex::experimental::ParallelFor<amrex::MultiFab, amr_wind::ocean_waves::relaxation_zones::update_target_vof(amr_wind::CFDSim&)::$_0>(mf=0x000055555c9e7018, ng=0x00007fffffff139c, f=0x00007fffffff1380) at AMReX_MFParallelFor.H:97:5
    frame #4: 0x0000555556479d04 amr_wind`amr_wind::ocean_waves::relaxation_zones::update_target_vof(sim=0x00007fffffff1e98) at relaxation_zones_ops.cpp:63:9
    frame #5: 0x0000555556496b25 amr_wind`amr_wind::ocean_waves::ops::UpdateTargetVolumeFractionOp<amr_wind::ocean_waves::W2AWaves, void>::operator()(this=0x00007fffffff1547, data=0x0000555556df7168) at relaxation_zones_ops.H:96:9
    frame #6: 0x0000555556496acd amr_wind`amr_wind::ocean_waves::OWModel<amr_wind::ocean_waves::W2AWaves>::update_target_volume_fraction(this=0x0000555556df7160) at OceanWavesModel.H:108:9
    frame #7: 0x0000555556476716 amr_wind`amr_wind::ocean_waves::OceanWaves::post_init_actions(this=0x0000555556df4300) at OceanWaves.cpp:74:12
    frame #8: 0x00005555556693ac amr_wind`incflo::init_amr_wind_modules(this=0x00007fffffff1da8) at incflo.cpp:114:13
    frame #9: 0x00005555556697c3 amr_wind`incflo::InitData(this=0x00007fffffff1da8) at incflo.cpp:175:5
    frame #10: 0x000055555565de9d amr_wind`main(argc=11, argv=0x00007fffffff25d8) at main.cpp:66:19
    frame #11: 0x00007fffedeca7e5 libc.so.6`__libc_start_main + 229
    frame #12: 0x000055555565d84e amr_wind`_start + 46
(lldb) print normL1
(amrex::Real) 0