Application: KWin (kwin_x11), signal: Segmentation fault

[KCrash Handler]
#4  0x00007de944ece64f in KWin::Workspace::workspaceEvent(xcb_generic_event_t*) () from /lib/x86_64-linux-gnu/libkwin.so.5
#5  0x00007de94389c4af in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007de93db60086 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#7  0x00007de93db6179f in QXcbConnection::processXcbEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#8  0x00007de93db89cff in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#9  0x00007de940ea85b5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007de940f07717 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007de940ea7a53 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007de9438fc279 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007de94389da7b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007de9438a63e8 in QCoreApplication::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00005c9f8105fba1 in ?? ()
#16 0x00007de94224d1ca in __libc_start_call_main (main=main@entry=0x5c9f8105f4f0, argc=argc@entry=1, argv=argv@entry=0x7ffce2e98ca8) at ../sysdeps/nptl/libc_start_call_main.h:58
#17 0x00007de94224d28b in __libc_start_main_impl (main=0x5c9f8105f4f0, argc=1, argv=0x7ffce2e98ca8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffce2e98c98) at ../csu/libc-start.c:360
#18 0x00005c9f810610e5 in ?? ()
[Inferior 1 (process 1685) detached]