ASM3: SystemError: <built-in function SoType_createInstance> returned a result with an exception set

[GinTonic99]

[code] OS: Ubuntu Core 22 (KDE/plasma) Word size of FreeCAD: 64-bit Version: 2024.207.0.38947 (Git) Snap 128 Build type: Release Branch: tag: 20240123stable Hash: 0c0f69ad4806682096b51f7669d5f1cb83f9c7d7 Python 3.10.12, Qt 5.15.10, Coin 4.0.1rt, Vtk 7.1.1, OCC 7.7.1 Locale: German/Austria (de_AT) Installed mods:

• sheetmetal 0.4.0
• POV-Ray-Rendering
• Curves 0.6.23
• fasteners 0.5.2 (Disabled)
• lattice2 1.0.0
• QuickMeasure 2022.10.28
• Help
• TabBar
• Glass
• Assembly4 0.50.7
• FreeCAD_SketchArch
• PieMenu 1.2.7 (Disabled)
• fasteners.backup1707169124.7464342 0.5.0 (Disabled)
• woodworking 0.21.2.33771
• CurvedShapes 1.0.5
• Render 2024.1.23 [/code]

when trying to apply any constraint in ASM3, the following error occurs and the constraint is not applied:

`16:05:55 233.25315 constraint.py(828): constraint "Locked" command exception SystemError: PY_SSIZE_T_CLEAN macro must be defined for '#' formats

The above exception was the direct cause of the following exception:

Traceback (most recent call last): File "", line 677, in report File "/snap/freecad-realthunder/128/usr/Mod/Assembly3/./freecad/asm3/assembly.py", line 2982, in make AsmElementLink.make(AsmElementLink.MakeInfo(cstr,*e)) File "/snap/freecad-realthunder/128/usr/Mod/Assembly3/./freecad/asm3/assembly.py", line 2278, in make link.Proxy.setLink(info.Owner,info.Subname) File "/snap/freecad-realthunder/128/usr/Mod/Assembly3/./freecad/asm3/assembly.py", line 2136, in setLink element = AsmElement.make(sel,radius=radius,name='_Element') File "/snap/freecad-realthunder/128/usr/Mod/Assembly3/./freecad/asm3/assembly.py", line 1249, in make element = AsmElement.create(name,elements) File "/snap/freecad-realthunder/128/usr/Mod/Assembly3/./freecad/asm3/assembly.py", line 1060, in create ViewProviderAsmElement(element.ViewObject) File "/snap/freecad-realthunder/128/usr/Mod/Assembly3/./freecad/asm3/assembly.py", line 1302, in init super(ViewProviderAsmElement,self).init(vobj) File "/snap/freecad-realthunder/128/usr/Mod/Assembly3/./freecad/asm3/assembly.py", line 316, in init super(ViewProviderAsmOnTop,self).init(vobj) File "/snap/freecad-realthunder/128/usr/Mod/Assembly3/./freecad/asm3/assembly.py", line 259, in init self.attach(vobj) File "/snap/freecad-realthunder/128/usr/Mod/Assembly3/./freecad/asm3/assembly.py", line 1307, in attach self.setupAxis() File "/snap/freecad-realthunder/128/usr/Mod/Assembly3/./freecad/asm3/assembly.py", line 1405, in setupAxis node = coin.SoType.fromName('SoFCSelectionRoot').createInstance() File "/snap/freecad-realthunder/128/usr/lib/python3/dist-packages/pivy/coin.py", line 491, in createInstance return _coin.SoType_createInstance(self) SystemError: returned a result with an exception set`

exception.zip

The error above occured when trying to apply a locked constraint on one of the sides of the cube in the file attached