Coredump when using the vnc plugin

When using the vnc plugin, the application will crash before redering the first screen with a core dump.

Info:

• Qt-Version Qt5.10.0 : Based on Yocto rocko-18.0.3
• Hardware: ARM v7 Cortex-A15 AM5708
• Hardware supports OpenGL ES 2.0

Toolchain:

   arm-oe-linux-gnueabi-g++ (GCC) 7.3.0

Stacktrace 

Thread 1 "rmmi" received signal SIGSEGV, Segmentation fault.
0xb6182d90 in QBackingStore::resize(QSize const&) () from /usr/lib/libQt5Gui.so.5
(gdb) bt
#0 0xb6182d90 in QBackingStore::resize(QSize const&) () from /usr/lib/libQt5Gui.so.5
#1 0xb65831b8 in QSGSoftwareRenderLoop::renderWindow (this=0xdee3c8, window=<optimized out>, isNewExpose=isNewExpose@entry=true)
at /usr/src/debug/qtdeclarative/5.10.0+gitAUTOINC+dac71f3d6f-r0/git/src/quick/scenegraph/adaptations/software/qsgsoftwarerenderloop.cpp:119
#2 0xb65840c0 in QSGSoftwareRenderLoop::exposureChanged (this=<optimized out>, window=<optimized out>)
at /usr/src/debug/qtdeclarative/5.10.0+gitAUTOINC+dac71f3d6f-r0/git/src/quick/scenegraph/adaptations/software/qsgsoftwarerenderloop.cpp:211
#3 0xb5fde348 in QWindow::event(QEvent*) () from /usr/lib/libQt5Gui.so.5