cessna model crashing gazebo

[EricPedley]

[ruby $(which gz) sim-1] [Err] [CustomMeshShape.cc:144] [dartsim::CustomMeshShape] One of the submeshes [1:group_0] in the input mesh [/home/miller/code/ardu_ws/install/ardupilot_gazebo/share/ardupilot_gazebo/models/cessna/meshes] does not have a normal count [0] that matches its vertex count [2]. This submesh will be ignored!
[ruby $(which gz) sim-1] [Err] [CustomMeshShape.cc:144] [dartsim::CustomMeshShape] One of the submeshes [17:group_5] in the input mesh [/home/miller/code/ardu_ws/install/ardupilot_gazebo/share/ardupilot_gazebo/models/cessna/meshes] does not have a normal count [0] that matches its vertex count [4]. This submesh will be ignored!
[ruby $(which gz) sim-1] [Err] [CustomMeshShape.cc:144] [dartsim::CustomMeshShape] One of the submeshes [76:group_9] in the input mesh [/home/miller/code/ardu_ws/install/ardupilot_gazebo/share/ardupilot_gazebo/models/cessna/meshes] does not have a normal count [0] that matches its vertex count [2]. This submesh will be ignored!
[ruby $(which gz) sim-1] [Err] [CustomMeshShape.cc:144] [dartsim::CustomMeshShape] One of the submeshes [115:ske2A3] in the input mesh [/home/miller/code/ardu_ws/install/ardupilot_gazebo/share/ardupilot_gazebo/models/cessna/meshes] does not have a normal count [0] that matches its vertex count [4]. This submesh will be ignored!
[ruby $(which gz) sim-1] [Err] [CustomMeshShape.cc:144] [dartsim::CustomMeshShape] One of the submeshes [116:ske2A3] in the input mesh [/home/miller/code/ardu_ws/install/ardupilot_gazebo/share/ardupilot_gazebo/models/cessna/meshes] does not have a normal count [0] that matches its vertex count [2]. This submesh will be ignored!
[ruby $(which gz) sim-1] [Err] [CustomMeshShape.cc:144] [dartsim::CustomMeshShape] One of the submeshes [2:group_0] in the input mesh [/home/miller/code/ardu_ws/install/ardupilot_gazebo/share/ardupilot_gazebo/models/cessna/meshes] does not have a normal count [0] that matches its vertex count [4]. This submesh will be ignored!
[ruby $(which gz) sim-1] [Err] [CustomMeshShape.cc:144] [dartsim::CustomMeshShape] One of the submeshes [4:SketchUp] in the input mesh [/home/miller/code/ardu_ws/install/ardupilot_gazebo/share/ardupilot_gazebo/models/cessna/meshes] does not have a normal count [0] that matches its vertex count [8]. This submesh will be ignored!
[ruby $(which gz) sim-1] [Err] [CustomMeshShape.cc:144] [dartsim::CustomMeshShape] One of the submeshes [5:SketchUp] in the input mesh [/home/miller/code/ardu_ws/install/ardupilot_gazebo/share/ardupilot_gazebo/models/cessna/meshes] does not have a normal count [0] that matches its vertex count [12]. This submesh will be ignored!
[ruby $(which gz) sim-1] [Err] [CustomMeshShape.cc:144] [dartsim::CustomMeshShape] One of the submeshes [6:SketchUp] in the input mesh [/home/miller/code/ardu_ws/install/ardupilot_gazebo/share/ardupilot_gazebo/models/cessna/meshes] does not have a normal count [0] that matches its vertex count [2]. This submesh will be ignored!
[ruby $(which gz) sim-1] Stack trace (most recent call last):
[ruby $(which gz) sim-1] #31   Object "/lib/x86_64-linux-gnu/libruby-3.0.so.3.0", at 0x7597140a8e19, in ruby_run_node
[ruby $(which gz) sim-1] #30   Object "/lib/x86_64-linux-gnu/libruby-3.0.so.3.0", at 0x7597140a5317, in 
[ruby $(which gz) sim-1] #29   Object "/lib/x86_64-linux-gnu/libruby-3.0.so.3.0", at 0x75971423a30c, in rb_vm_exec
[ruby $(which gz) sim-1] #28   Object "/lib/x86_64-linux-gnu/libruby-3.0.so.3.0", at 0x759714234c96, in 
[ruby $(which gz) sim-1] #27   Object "/lib/x86_64-linux-gnu/libruby-3.0.so.3.0", at 0x759714231fc5, in 
[ruby $(which gz) sim-1] #26   Object "/lib/x86_64-linux-gnu/libruby-3.0.so.3.0", at 0x75971422fc34, in 
[ruby $(which gz) sim-1] #25   Object "/usr/lib/x86_64-linux-gnu/ruby/3.0.0/fiddle.so", at 0x759713bf744b, in 
[ruby $(which gz) sim-1] #24   Object "/lib/x86_64-linux-gnu/libruby-3.0.so.3.0", at 0x7597141fd088, in rb_nogvl
[ruby $(which gz) sim-1] #23   Object "/usr/lib/x86_64-linux-gnu/ruby/3.0.0/fiddle.so", at 0x759713bf6d6b, in 
[ruby $(which gz) sim-1] #22   Object "/lib/x86_64-linux-gnu/libffi.so.8", at 0x759713e2d492, in 
[ruby $(which gz) sim-1] #21   Object "/lib/x86_64-linux-gnu/libffi.so.8", at 0x759713e30e2d, in 
[ruby $(which gz) sim-1] #20   Object "/usr/lib/x86_64-linux-gnu/libgz-sim8-gz.so.8.6.0", at 0x759713492605, in runServer
[ruby $(which gz) sim-1] #19   Object "/lib/x86_64-linux-gnu/libgz-sim8.so.8", at 0x75970e93d485, in 
[ruby $(which gz) sim-1] #18   Object "/lib/x86_64-linux-gnu/libgz-sim8.so.8", at 0x75970e94d8a2, in gz::sim::v8::SimulationRunner::Run(unsigned long)
[ruby $(which gz) sim-1] #17   Object "/lib/x86_64-linux-gnu/libgz-sim8.so.8", at 0x75970e94ce60, in gz::sim::v8::SimulationRunner::Step(gz::sim::v8::UpdateInfo const&)
[ruby $(which gz) sim-1] #16   Object "/lib/x86_64-linux-gnu/libgz-sim8.so.8", at 0x75970e94c0a2, in gz::sim::v8::SimulationRunner::UpdateSystems()
[ruby $(which gz) sim-1] #15   Object "/usr/lib/x86_64-linux-gnu/gz-sim-8/plugins/libgz-sim-physics-system.so", at 0x75970511f5b6, in gz::sim::v8::systems::Physics::Update(gz::sim::v8::UpdateInfo const&, gz::sim::v8::EntityComponentManager&)
[ruby $(which gz) sim-1] #14   Object "/usr/lib/x86_64-linux-gnu/gz-sim-8/plugins/libgz-sim-physics-system.so", at 0x75970511fc31, in gz::sim::v8::systems::PhysicsPrivate::Step(std::chrono::duration<long, std::ratio<1l, 1000000000l> > const&)
[ruby $(which gz) sim-1] #13   Object "/usr/lib/x86_64-linux-gnu/gz-physics-7/engine-plugins/libgz-physics-dartsim-plugin.so", at 0x7596e7a0900b, in gz::physics::dartsim::SimulationFeatures::WorldForwardStep(gz::physics::Identity const&, gz::physics::SpecifyData<gz::physics::RequireData<gz::physics::WorldPoses>, gz::physics::ExpectData<gz::physics::ChangedWorldPoses, gz::physics::Contacts, gz::physics::JointPositions> >&, gz::physics::CompositeData&, gz::physics::ExpectData<gz::physics::ApplyExternalForceTorques, gz::physics::ApplyGeneralizedForces, gz::physics::VelocityControlCommands, gz::physics::ServoControlCommands, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&)
[ruby $(which gz) sim-1] #12   Object "/lib/x86_64-linux-gnu/libdart.so.6.13", at 0x7596e75936d3, in dart::simulation::World::step(bool)
[ruby $(which gz) sim-1] #11   Object "/lib/x86_64-linux-gnu/libdart.so.6.13", at 0x7596e7578ca5, in dart::constraint::ConstraintSolver::solve()
[ruby $(which gz) sim-1] #10   Object "/lib/x86_64-linux-gnu/libdart.so.6.13", at 0x7596e7577494, in dart::constraint::ConstraintSolver::updateConstraints()
[ruby $(which gz) sim-1] #9    Object "/lib/x86_64-linux-gnu/libdart.so.6.13", at 0x7596e7549c1c, in dart::collision::CollisionGroup::collide(dart::collision::CollisionOption const&, dart::collision::CollisionResult*)
[ruby $(which gz) sim-1] #8    Object "/lib/x86_64-linux-gnu/libdart.so.6.13", at 0x7596e7549bab, in dart::collision::CollisionGroup::update()
[ruby $(which gz) sim-1] #7    Object "/lib/x86_64-linux-gnu/libdart.so.6.13", at 0x7596e7549575, in dart::collision::CollisionGroup::updateSkeletonSource(std::pair<dart::dynamics::MetaSkeleton const* const, dart::collision::CollisionGroup::CollisionSource<std::weak_ptr<dart::dynamics::MetaSkeleton const>, dart::dynamics::BodyNode> >&)
[ruby $(which gz) sim-1] #6    Object "/lib/x86_64-linux-gnu/libdart.so.6.13", at 0x7596e75486a8, in dart::collision::CollisionGroup::addShapeFrameImpl(dart::dynamics::ShapeFrame const*, void const*)
[ruby $(which gz) sim-1] #5    Object "/lib/x86_64-linux-gnu/libdart.so.6.13", at 0x7596e754462b, in dart::collision::CollisionDetector::claimCollisionObject(dart::dynamics::ShapeFrame const*)
[ruby $(which gz) sim-1] #4    Object "/lib/x86_64-linux-gnu/libdart.so.6.13", at 0x7596e7544725, in dart::collision::CollisionDetector::ManagerForUnsharableCollisionObjects::claimCollisionObject(dart::dynamics::ShapeFrame const*)
[ruby $(which gz) sim-1] #3    Object "/lib/x86_64-linux-gnu/libdart-collision-ode.so.6.13", at 0x75970006f162, in dart::collision::OdeCollisionDetector::createCollisionObject(dart::dynamics::ShapeFrame const*)
[ruby $(which gz) sim-1] #2    Object "/lib/x86_64-linux-gnu/libdart-collision-ode.so.6.13", at 0x759700080a25, in dart::collision::OdeCollisionObject::OdeCollisionObject(dart::collision::OdeCollisionDetector*, dart::dynamics::ShapeFrame const*)
[ruby $(which gz) sim-1] #1    Object "/lib/x86_64-linux-gnu/libdart-collision-ode.so.6.13", at 0x75970007d88a, in dart::collision::detail::OdeMesh::OdeMesh(dart::collision::OdeCollisionObject const*, aiScene const*, Eigen::Matrix<double, 3, 1, 0, 3, 1> const&)
[ruby $(which gz) sim-1] #0    Object "/lib/x86_64-linux-gnu/libdart-collision-ode.so.6.13", at 0x75970007d487, in dart::collision::detail::OdeMesh::fillArrays(aiScene const*, Eigen::Matrix<double, 3, 1, 0, 3, 1> const&)
[ruby $(which gz) sim-1] Segmentation fault (Address not mapped to object [0x4])

looks like the mesh is broken somehow. I'm on GZ harmonic.