neural convert to OpenFoam Error

Dear Sir/Madam,

Hi, I am currently trying to experiment with Netgen. I have managed to generate the mesh on the carotid artery and export it into neural format. I am thinking to convert it to FOAM, so I use the command netgenNeutralToFoa, however, everytime I try this command, it always showed me the error below. is there anyway I can fix it in Netgen?

face 0 in patch 1 does not have neighbour cell face: 3(7298 7432 7044)

From function Foam::labelList Foam::polyMesh::facePatchFaceCells(const faceList&, const labelListList&, const faceListList&, Foam::label) const
in file meshes/polyMesh/polyMeshFromShapeMesh.C at line 118.

FOAM aborting

#0 Foam::error::printStack(Foam::Ostream&) at ??:?
#1 Foam::error::abort() at ??:?
#2 Foam::polyMesh::facePatchFaceCells(Foam::ListFoam::face const&, Foam::List<Foam::List > const&, Foam::List<Foam::ListFoam::face > const&, int) const at ??:?
#3 Foam::polyMesh::setTopology(Foam::ListFoam::cellShape const&, Foam::List<Foam::ListFoam::face > const&, Foam::ListFoam::word const&, Foam::List&, Foam::List&, int&, int&, Foam::ListFoam::cell&) at ??:?
#4 Foam::polyMesh::polyMesh(Foam::IOobject const&, Foam::Xfer<Foam::Field<Foam::Vector > > const&, Foam::ListFoam::cellShape const&, Foam::List<Foam::ListFoam::face > const&, Foam::ListFoam::word const&, Foam::ListFoam::word const&, Foam::word const&, Foam::word const&, Foam::ListFoam::word const&, bool) at ??:?
#5 ? at ??:?
#6 __libc_start_main in “/lib/x86_64-linux-gnu/”
#7 ? at ??:?
Aborted (core dumped)

Sorry this is not a function of netgen, but of openFOAM. Maybe the community there can help. If the netgen mesh is corrupt, maybe you create a small test case where Netgen creates such corrupt meshes?