Using own robot, there is an error

[dongyu5656]

@Coppelia When I try to use my robot to do some tasks, the terminal will rise a n error, I don`t know how to deal this. Before did a task, I had tested my robot, it was fine in coppeliaSim. And I noticed that the IK mode in CoppeliaSim4.1 is not as good as in 4.3 and after version, so I want to know whether there will be a newer version of PyRep and RLBench to have a better support for some useful modules in CoppeliaSim.
Error: signal 11:

/home/wdy/software/CoppeliaSim/libcoppeliaSim.so.1(_Z11_segHandleri+0x30)[0x7fd6a87d9ae0]
/lib/x86_64-linux-gnu/libc.so.6(+0x43090)[0x7fd6b12a8090]
/home/wdy/software/CoppeliaSim/libQt5Core.so.5(_ZN6QMutex4lockEv+0x15)[0x7fd6a468e375]
/home/wdy/software/CoppeliaSim/libQt5Gui.so.5(+0x387b0e)[0x7fd6a75bab0e]
/home/wdy/software/CoppeliaSim/libQt5Gui.so.5(+0x37f3cf)[0x7fd6a75b23cf]
/home/wdy/software/CoppeliaSim/libQt5Gui.so.5(_ZN18QRasterPaintEngine11updateBrushERK6QBrush+0x87)[0x7fd6a75b5837]
/home/wdy/software/CoppeliaSim/libQt5Gui.so.5(_ZN18QRasterPaintEngine8fillRectERK6QRectFRK6QBrush+0x2a)[0x7fd6a75b630a]
/home/wdy/software/CoppeliaSim/libQt5Gui.so.5(_ZN8QPainter8fillRectERK5QRectRK6QBrush+0xc5)[0x7fd6a75c9165]
/home/wdy/software/CoppeliaSim/libQt5Widgets.so.5(_ZNK12QFusionStyle11drawControlEN6QStyle14ControlElementEPK12QStyleOptionP8QPainterPK7QWidget+0x2da7)[0x7fd6a7cb3207]
/home/wdy/software/CoppeliaSim/libQt5Widgets.so.5(+0x20a3ee)[0x7fd6a7c8a3ee]
QMutex: destroying locked mutex