not deterministic bug when call to gmsh.model.getBoundary. Error message: ERROR: LoadError: gmshModelGetBoundary returned non-zero error code: 1``ERROR: LoadError: gmshModelGetBoundary returned non-zero error code: 1 A similar bug has been reported for the Julia api of gmsh.

Solution explained on: https://gitlab.onelab.info/gmsh/gmsh/-/issues/629 Try it on Python.