qgis 3.4 crashes when running Vector Bbender

[rdelassus]

I have a building with many rooms in a geojson format. The coordinates are in meters, starting at 0,0. I defined 7 lines between the 7 angles of my building and the 7 angles of this same building on the OSM layer.

Using Vector Bender makes qgis instantly crash. Here are the logs in the console:

QGIS died on signal 11[New LWP 669]
[New LWP 670]
[New LWP 671]
[New LWP 672]
[New LWP 675]
[New LWP 676]
[New LWP 683]
[New LWP 686]
[New LWP 687]
[New LWP 688]
[New LWP 689]
[New LWP 690]
[New LWP 691]
[New LWP 692]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f1de59e56c2 in waitpid () from /lib/x86_64-linux-gnu/libc.so.6
[Current thread is 1 (Thread 0x7f1dea543a00 (LWP 667))]
#0  0x00007f1de59e56c2 in waitpid () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x0000563aecf28d9e in  ()
#2  0x00007f1de593ff20 in <signal handler called> () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f1d5143c8b8 in qh_initstatistics () at /usr/lib/python3/dist-packages/matplotlib/_qhull.cpython-36m-x86_64-linux-gnu.so
#4  0x00007f1d51413f42 in qh_initqhull_start () at /usr/lib/python3/dist-packages/matplotlib/_qhull.cpython-36m-x86_64-linux-gnu.so
#5  0x00007f1d5143d204 in qh_new_qhull () at /usr/lib/python3/dist-packages/matplotlib/_qhull.cpython-36m-x86_64-linux-gnu.so
#6  0x00007f1d514067b7 in  () at /usr/lib/python3/dist-packages/matplotlib/_qhull.cpython-36m-x86_64-linux-gnu.so
#7  0x00007f1d9e086eab in _PyCFunction_FastCallDict () at /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0
#8  0x00007f1d9e15b393 in  () at /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0
#9  0x00007f1d9e126b70 in _PyEval_EvalFrameDefault () at /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0
#10 0x00007f1d9e15abab in  () at /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0
#11 0x00007f1d9e15aec1 in _PyFunction_FastCallDict () at /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0
#12 0x00007f1d9e174ec1 in _PyObject_FastCallDict () at /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0
#13 0x00007f1d9e175a9d in _PyObject_Call_Prepend () at /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0
#14 0x00007f1d9e175b08 in PyObject_Call () at /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0
#15 0x00007f1d9dff7159 in  () at /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0
#16 0x00007f1d9e061342 in  () at /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0
#17 0x00007f1d9e174e19 in _PyObject_FastCallDict () at /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0
#18 0x00007f1d9e15b058 in  () at /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0
#19 0x00007f1d9e126b70 in _PyEval_EvalFrameDefault () at /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0
#20 0x00007f1d9e159953 in  () at /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0
#21 0x00007f1d9e15afb3 in _PyFunction_FastCallDict () at /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0
#22 0x00007f1d9e174ec1 in _PyObject_FastCallDict () at /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0
#23 0x00007f1d9e175a9d in _PyObject_Call_Prepend () at /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0
#24 0x00007f1d9e175b08 in PyObject_Call () at /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0
#25 0x00007f1d9dff7159 in  () at /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0
#26 0x00007f1d9e061342 in  () at /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0
#27 0x00007f1d9e174e19 in _PyObject_FastCallDict () at /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0
#28 0x00007f1d9e15b058 in  () at /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0
#29 0x00007f1d9e126b70 in _PyEval_EvalFrameDefault () at /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0
#30 0x00007f1d9e159953 in  () at /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0
#31 0x00007f1d9e15afb3 in _PyFunction_FastCallDict () at /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0
#32 0x00007f1d9e174ec1 in _PyObject_FastCallDict () at /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0
#33 0x00007f1d9e175a9d in _PyObject_Call_Prepend () at /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0
#34 0x00007f1d9e175b08 in PyObject_Call () at /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0
#35 0x00007f1d9da58c30 in  () at /usr/lib/python3/dist-packages/PyQt5/QtCore.cpython-36m-x86_64-linux-gnu.so
#36 0x00007f1d9da59108 in  () at /usr/lib/python3/dist-packages/PyQt5/QtCore.cpython-36m-x86_64-linux-gnu.so
#37 0x00007f1d9da59390 in  () at /usr/lib/python3/dist-packages/PyQt5/QtCore.cpython-36m-x86_64-linux-gnu.so
#38 0x00007f1d9da59d07 in  () at /usr/lib/python3/dist-packages/PyQt5/QtCore.cpython-36m-x86_64-linux-gnu.so
#39 0x00007f1de654c679 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#40 0x00007f1de738cb82 in QAbstractButton::clicked(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#41 0x00007f1de738cd9a in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#42 0x00007f1de738e17a in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#43 0x00007f1de738e36d in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#44 0x00007f1d9cd3b9a3 in  () at /usr/lib/python3/dist-packages/PyQt5/QtWidgets.cpython-36m-x86_64-linux-gnu.so
#45 0x00007f1de72da038 in QWidget::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#46 0x00007f1d9cd3cf93 in  () at /usr/lib/python3/dist-packages/PyQt5/QtWidgets.cpython-36m-x86_64-linux-gnu.so
#47 0x00007f1de729b82c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#48 0x00007f1de72a364f in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#49 0x00007f1de8031f3b in QgsApplication::notify(QObject*, QEvent*) () at /usr/lib/libqgis_core.so.3.4.6
#50 0x00007f1de651d9a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#51 0x00007f1de72a2622 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#52 0x00007f1de72f514b in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#53 0x00007f1de72f77ba in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#54 0x00007f1de729b82c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#55 0x00007f1de72a30f4 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#56 0x00007f1de8031f3b in QgsApplication::notify(QObject*, QEvent*) () at /usr/lib/libqgis_core.so.3.4.6
#57 0x00007f1de651d9a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#58 0x00007f1de6adf523 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#59 0x00007f1de6ae0ff5 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#60 0x00007f1de6ab82eb in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#61 0x00007f1dc34b81c0 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#62 0x00007f1dda42a317 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#63 0x00007f1dda42a550 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#64 0x00007f1dda42a5dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#65 0x00007f1de65768ef in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#66 0x00007f1de651b9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#67 0x00007f1de6524a84 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#68 0x0000563aecf253a0 in  ()
#69 0x00007f1de5922b97 in __libc_start_main () at /lib/x86_64-linux-gnu/libc.so.6
#70 0x0000563aecf287aa in _start ()
gdb returned 0