Exception thrown: terminate called after throwing an instance of 'libnest2d::GeometryException' what(): Error while merging geometries!

[fourroadsfloyd]

Only Boost and NLopt have been compiled, leaving libnest2d in a source code state, which has been successfully compiled. When using the test code provided on the homepage, the terminal prints:

terminate called after throwing an instance of 'libnest2d::GeometryException'
what(): Error while merging geometries!

Operating System: win11
Editor: Qt Creator
Qt Library Version: Qt 6.9.3
Build Tools for Boost and NLopt: CMake 3.25.3
Compiler: MinGw 13 provided by Qt

[fourroadsfloyd]

In the clipper.addpath function, return false occurs because of the small number of points. Why does this happen?