Heal geometry: error for torus (brep format)

[vkorchagova]

Hello everyone,

I create the script for automatic surface mesh building by Netgen, and I use the geometry healing procedure as the one of steps in the script. When I try to run the "Heal geometry" procedure for the torus in brep geometry I see the following error:

NETGEN-6.2.2501-3-g2778b934
Developed by Joachim Schoeberl at
2010-xxxx Vienna University of Technology
2006-2010 RWTH Aachen University
1996-2006 Johannes Kepler University Linz
Including OpenCascade geometry kernel
optfile ./ng.opt does not exist - using default values
togl-version : 2
OCC module loaded
loading ngsolve library
NGSolve-6.2.2501-2-gb6e0cdb84
Using Lapack
Including sparse direct solver UMFPACK
Running parallel using 8 thread(s)
 Load BREP geometry file /home/pcadmin/Downloads/torus.brep
Building topology tree ... done
Starting geometry healing procedure (tolerance: 0.001)
-----------------------------------

- repairing faces
repaired face 1 (some wires are fixed)

- fixing small edges

- fixing spot and strip faces

- sewing faces
 not possible
- making solids
 not possible (no shells)
terminate called after throwing an instance of 'Standard_ConstructionError'
Aborted (core dumped)

Torus was the standard figure built in FreeCAD and exported to brep format. Netgen version is the fresh update from GitHub. Operational system is Ubuntu 24.04.

I'll be very thankful for your help.

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Best regards,
Victoria