Error : The 1D mesh seems not to be forming a closed loop

Hello every1.

After updating gmsh, I cannot mesh this model anymore. Here is the options I use

gmsh.option.setNumber:
- Mesh.Algorithm: 2
- Mesh.Algorithm3D: 10
- General.NumThreads: 8
- Mesh.CharacteristicLengthMin: 1
- Mesh.CharacteristicLengthMax: 1

which should correspond to the following command line gmsh -3 -algo auto -algo hxt -nt 8 -clmin 1 -clmax 1 mambo_s34.step

It was working fine with Gmsh 4.9.0-git-a159bb0c.

I have similar issues with other models...