Thread 1 "python3" received signal SIGTRAP, Trace/breakpoint trap.
_g_log_abort (breakpoint=breakpoint@entry=1)
    at ../../../../glib/gmessages.c:583
583	../../../../glib/gmessages.c: No such file or directory.
(gdb) bt
#0  _g_log_abort (breakpoint=breakpoint@entry=1)
    at ../../../../glib/gmessages.c:583
#1  0x00007ffff4ba6571 in g_log_writer_default (log_level=6, 
    log_level@entry=G_LOG_LEVEL_ERROR, fields=fields@entry=0x7fffffffb3f0, 
    n_fields=n_fields@entry=6, user_data=user_data@entry=0x0)
    at ../../../../glib/gmessages.c:2735
#2  0x00007ffff4ba47de in g_log_structured_array (log_level=G_LOG_LEVEL_ERROR, 
    fields=0x7fffffffb3f0, n_fields=6) at ../../../../glib/gmessages.c:1970
#3  0x00007ffff4ba522e in g_log_structured_standard (
    log_domain=log_domain@entry=0x7ffff18f9dae "Gdk", 
    log_level=log_level@entry=G_LOG_LEVEL_ERROR, 
    file=file@entry=0x7ffff1918590 "../../../../../gdk/x11/gdkdisplay-x11.c", 
    line=line@entry=0x7ffff1917fef "2766", 
    func=func@entry=0x7ffff1918cb0 <__func__.74447> "_gdk_x11_display_error_event", message_format=message_format@entry=0x7ffff191902b "%s")
    at ../../../../glib/gmessages.c:2027
#4  0x00007ffff18bbc31 in _gdk_x11_display_error_event (
    display=display@entry=0xcf0080, error=error@entry=0x7fffffffba40)
    at ../../../../../gdk/x11/gdkdisplay-x11.c:2766
#5  0x00007ffff18c8ab3 in gdk_x_error (xdisplay=0xce1800, error=0x7fffffffba40)
    at ../../../../../gdk/x11/gdkmain-x11.c:307
#6  0x00007fffef656c8d in _XError (dpy=dpy@entry=0xce1800, 
    rep=rep@entry=0x10cec50) at ../../src/XlibInt.c:1434
#7  0x00007fffef653bb7 in handle_error (dpy=0xce1800, err=0x10cec50, in_XReply=<optimized out>) at ../../src/xcb_io.c:199
#8  0x00007fffef653c75 in handle_response (dpy=dpy@entry=0xce1800, response=0x10cec50, in_XReply=in_XReply@entry=1)
    at ../../src/xcb_io.c:311
#9  0x00007fffef654b88 in _XReply (dpy=dpy@entry=0xce1800, rep=rep@entry=0x7fffffffbc00, extra=extra@entry=0, 
    discard=discard@entry=1) at ../../src/xcb_io.c:621
#10 0x00007fffef65057d in XSync (dpy=0xce1800, discard=discard@entry=0) at ../../src/Sync.c:44
#11 0x00007fffef65061b in _XSyncFunction (dpy=<optimized out>) at ../../src/Synchro.c:35
#12 0x00007fffef65760f in _XPrivSyncFunction (dpy=0xce1800) at ../../src/XlibInt.c:222
#13 0x00007fffef40d7b7 in XShmAttach () from /usr/lib/x86_64-linux-gnu/libXext.so.6
#14 0x00007fffef18b82b in _cairo_xlib_shm_pool_create (display=0x11daa00, display=0x11daa00, ptr=<synthetic pointer>, size=4096)
    at ../../../../src/cairo-xlib-surface-shm.c:603
#15 _cairo_xlib_shm_info_create (will_sync=0, size=4096, display=<optimized out>) at ../../../../src/cairo-xlib-surface-shm.c:647
#16 _cairo_xlib_shm_surface_create (format=PIXMAN_a8r8g8b8, width=width@entry=32, height=height@entry=32, 
    will_sync=will_sync@entry=0, create_pixmap=4096, other=<optimized out>, other=<optimized out>)
    at ../../../../src/cairo-xlib-surface-shm.c:830
#17 0x00007fffef18c011 in _cairo_xlib_surface_create_shm (other=other@entry=0x11dba40, format=<optimized out>, 
    width=width@entry=32, height=height@entry=32) at ../../../../src/cairo-xlib-surface-shm.c:1156
#18 0x00007fffef18c09c in _cairo_xlib_surface_create_similar_shm (other=0x11dba40, format=CAIRO_FORMAT_ARGB32, width=32, height=32)
    at ../../../../src/cairo-xlib-surface-shm.c:1181
#19 0x00007fffef158e83 in INT_cairo_surface_create_similar_image (other=<optimized out>, format=CAIRO_FORMAT_ARGB32, width=32, 
    height=32) at ../../../../src/cairo-surface.c:595
#20 0x00007ffff18884bc in gdk_cairo_set_source_pixbuf (cr=cr@entry=0x1336800, pixbuf=pixbuf@entry=0x25fba40, pixbuf_x=-16, 
    pixbuf_y=-16) at ../../../../gdk/gdkcairo.c:339
#21 0x00007fffec8bb784 in gtk_css_image_icon_theme_draw (image=<optimized out>, cr=0x1336800, width=<optimized out>, height=16)
    at ../../../../gtk/gtkcssimageicontheme.c:84
#22 0x00007fffec8b6db1 in _gtk_css_image_draw (image=0x11990c0, cr=0x1336800, width=16, height=16)
    at ../../../../gtk/gtkcssimage.c:239
#23 0x00007fffec9ee902 in gtk_css_style_render_icon (style=<optimized out>, cr=cr@entry=0x1336800, x=<optimized out>, y=12, 
    width=16, height=16, builtin_type=builtin_type@entry=GTK_CSS_IMAGE_BUILTIN_NONE) at ../../../../gtk/gtkrendericon.c:68
#24 0x00007fffec86cebd in gtk_builtin_icon_draw (gadget=<optimized out>, cr=0x1336800, x=0, y=12, width=16, height=16)
    at ../../../../gtk/gtkbuiltinicon.c:155
#25 0x00007fffec8b5b83 in gtk_css_gadget_draw (gadget=gadget@entry=0x1267680, cr=cr@entry=0x1336800)
    at ../../../../gtk/gtkcssgadget.c:877
#26 0x00007fffec863b0c in gtk_box_gadget_draw (gadget=<optimized out>, cr=0x1336800, x=<optimized out>, y=<optimized out>, 
    width=<optimized out>, height=<optimized out>) at ../../../../gtk/gtkboxgadget.c:512
#27 0x00007fffec8b5b83 in gtk_css_gadget_draw (gadget=gadget@entry=0x12675a0, cr=cr@entry=0x1336800)
    at ../../../../gtk/gtkcssgadget.c:877
#28 0x00007fffec863b0c in gtk_box_gadget_draw (gadget=<optimized out>, cr=0x1336800, x=<optimized out>, y=<optimized out>, 
    width=<optimized out>, height=<optimized out>) at ../../../../gtk/gtkboxgadget.c:512
#29 0x00007fffec8b5b83 in gtk_css_gadget_draw (gadget=0x12674c0, cr=0x1336800) at ../../../../gtk/gtkcssgadget.c:877
#30 0x00007fffec8fa041 in gtk_expander_draw (widget=<optimized out>, cr=<optimized out>) at ../../../../gtk/gtkexpander.c:720
#31 0x00007fffecac4eab in gtk_widget_draw_internal (widget=widget@entry=0x1242f60, cr=cr@entry=0x1336800, 
    clip_to_size=clip_to_size@entry=1) at ../../../../gtk/gtkwidget.c:7032
#32 0x00007fffec8abeea in gtk_container_propagate_draw (container=container@entry=0x1252130, child=0x1242f60, cr=cr@entry=0x1336800)
    at ../../../../gtk/gtkcontainer.c:3841
#33 0x00007fffec8abfd2 in gtk_container_draw (widget=0x1252130, cr=cr@entry=0x1336800) at ../../../../gtk/gtkcontainer.c:3661
#34 0x00007fffec85fa34 in gtk_box_draw_contents (gadget=<optimized out>, cr=0x1336800, x=<optimized out>, y=<optimized out>, 
    width=<optimized out>, height=<optimized out>, unused=0x0) at ../../../../gtk/gtkbox.c:448
#35 0x00007fffec8b0f2d in gtk_css_custom_gadget_draw (gadget=<optimized out>, cr=<optimized out>, x=<optimized out>, 
    y=<optimized out>, width=<optimized out>, height=<optimized out>) at ../../../../gtk/gtkcsscustomgadget.c:159
#36 0x00007fffec8b5b83 in gtk_css_gadget_draw (gadget=0x126f170, cr=0x1336800) at ../../../../gtk/gtkcssgadget.c:877
#37 0x00007fffec862341 in gtk_box_draw (widget=<optimized out>, cr=<optimized out>) at ../../../../gtk/gtkbox.c:457
#38 0x00007fffecac4eab in gtk_widget_draw_internal (widget=widget@entry=0x1252130, cr=cr@entry=0x1336800, 
    clip_to_size=clip_to_size@entry=1) at ../../../../gtk/gtkwidget.c:7032
#39 0x00007fffec8abeea in gtk_container_propagate_draw (container=container@entry=0x12108a0, child=0x1252130, cr=cr@entry=0x1336800)
    at ../../../../gtk/gtkcontainer.c:3841
#40 0x00007fffec99e112 in gtk_notebook_draw_stack (gadget=<optimized out>, cr=0x1336800, x=<optimized out>, y=<optimized out>, 
    width=<optimized out>, height=<optimized out>, unused=0x0) at ../../../../gtk/gtknotebook.c:2515
#41 0x00007fffec8b0f2d in gtk_css_custom_gadget_draw (gadget=<optimized out>, cr=<optimized out>, x=<optimized out>, 
    y=<optimized out>, width=<optimized out>, height=<optimized out>) at ../../../../gtk/gtkcsscustomgadget.c:159
#42 0x00007fffec8b5b83 in gtk_css_gadget_draw (gadget=gadget@entry=0x126a310, cr=cr@entry=0x1336800)
    at ../../../../gtk/gtkcssgadget.c:877
#43 0x00007fffec863b0c in gtk_box_gadget_draw (gadget=<optimized out>, cr=0x1336800, x=<optimized out>, y=<optimized out>, 
    width=<optimized out>, height=<optimized out>) at ../../../../gtk/gtkboxgadget.c:512
#44 0x00007fffec8b5b83 in gtk_css_gadget_draw (gadget=0x1261770, cr=cr@entry=0x1336800) at ../../../../gtk/gtkcssgadget.c:877
#45 0x00007fffec9a08fc in gtk_notebook_draw (widget=<optimized out>, cr=0x1336800) at ../../../../gtk/gtknotebook.c:2530
#46 0x00007fffecac4eab in gtk_widget_draw_internal (widget=widget@entry=0x12108a0, cr=cr@entry=0x1336800, 
    clip_to_size=clip_to_size@entry=1) at ../../../../gtk/gtkwidget.c:7032
#47 0x00007fffec8abeea in gtk_container_propagate_draw (container=container@entry=0x1249610, child=0x12108a0, cr=cr@entry=0x1336800)
    at ../../../../gtk/gtkcontainer.c:3841
#48 0x00007fffec8abfd2 in gtk_container_draw (widget=0x1249610, cr=0x1336800) at ../../../../gtk/gtkcontainer.c:3661
#49 0x00007fffecac4eab in gtk_widget_draw_internal (widget=widget@entry=0x1249610, cr=cr@entry=0x1336800, 
    clip_to_size=clip_to_size@entry=1) at ../../../../gtk/gtkwidget.c:7032
#50 0x00007fffec8abeea in gtk_container_propagate_draw (container=container@entry=0x124d130, child=0x1249610, cr=cr@entry=0x1336800)
    at ../../../../gtk/gtkcontainer.c:3841
#51 0x00007fffec8abfd2 in gtk_container_draw (widget=0x124d130, cr=0x1336800) at ../../../../gtk/gtkcontainer.c:3661
#52 0x00007fffec8f83cc in gtk_event_box_draw (widget=0x124d130, cr=0x1336800) at ../../../../gtk/gtkeventbox.c:619
#53 0x00007fffecac4eab in gtk_widget_draw_internal (widget=widget@entry=0x124d130, cr=cr@entry=0x1336800, 
    clip_to_size=clip_to_size@entry=1) at ../../../../gtk/gtkwidget.c:7032
#54 0x00007fffec8abeea in gtk_container_propagate_draw (container=container@entry=0x12419b0, child=0x124d130, cr=cr@entry=0x1336800)
    at ../../../../gtk/gtkcontainer.c:3841
#55 0x00007fffec8abfd2 in gtk_container_draw (widget=0x12419b0, cr=cr@entry=0x1336800) at ../../../../gtk/gtkcontainer.c:3661
#56 0x00007fffec85fa34 in gtk_box_draw_contents (gadget=<optimized out>, cr=0x1336800, x=<optimized out>, y=<optimized out>, 
    width=<optimized out>, height=<optimized out>, unused=0x0) at ../../../../gtk/gtkbox.c:448
#57 0x00007fffec8b0f2d in gtk_css_custom_gadget_draw (gadget=<optimized out>, cr=<optimized out>, x=<optimized out>, 
    y=<optimized out>, width=<optimized out>, height=<optimized out>) at ../../../../gtk/gtkcsscustomgadget.c:159
#58 0x00007fffec8b5b83 in gtk_css_gadget_draw (gadget=0x121b3f0, cr=0x1336800) at ../../../../gtk/gtkcssgadget.c:877
#59 0x00007fffec862341 in gtk_box_draw (widget=<optimized out>, cr=<optimized out>) at ../../../../gtk/gtkbox.c:457
#60 0x00007fffecac4eab in gtk_widget_draw_internal (widget=widget@entry=0x12419b0, cr=cr@entry=0x1336800, 
    clip_to_size=clip_to_size@entry=1) at ../../../../gtk/gtkwidget.c:7032
#61 0x00007fffec8abeea in gtk_container_propagate_draw (container=container@entry=0x123a520, child=0x12419b0, cr=cr@entry=0x1336800)
    at ../../../../gtk/gtkcontainer.c:3841
#62 0x00007fffec8abfd2 in gtk_container_draw (widget=0x123a520, cr=0x1336800) at ../../../../gtk/gtkcontainer.c:3661
#63 0x00007fffecad2c8f in gtk_window_draw (widget=0x123a520, cr=0x1336800) at ../../../../gtk/gtkwindow.c:10545
#64 0x00007fffecac4eab in gtk_widget_draw_internal (widget=0x123a520, cr=0x1336800, clip_to_size=<optimized out>)
    at ../../../../gtk/gtkwidget.c:7032
#65 0x00007fffecacdf58 in gtk_widget_render (widget=widget@entry=0x123a520, window=0xcfc7d0, region=<optimized out>)
    at ../../../../gtk/gtkwidget.c:17542
#66 0x00007fffec9721b9 in gtk_main_do_event (event=<optimized out>) at ../../../../gtk/gtkmain.c:1838
#67 0x00007ffff1892765 in _gdk_event_emit (event=event@entry=0x7fffffffcef0) at ../../../../gdk/gdkevents.c:73
#68 0x00007ffff18a27e5 in _gdk_window_process_updates_recurse_helper (window=0xcfc7d0, expose_region=<optimized out>)
    at ../../../../gdk/gdkwindow.c:3852
#69 0x00007ffff18a39e6 in gdk_window_process_updates_internal (window=0xcfc7d0) at ../../../../gdk/gdkwindow.c:3998
#70 0x00007ffff18a3be0 in gdk_window_process_updates_with_mode (window=<optimized out>, recurse_mode=<optimized out>)
    at ../../../../gdk/gdkwindow.c:4192
#71 0x00007ffff4e77f6d in g_closure_invoke (closure=0x1cf9a60, return_value=0x0, n_param_values=1, param_values=0x7fffffffd1d0, 
    invocation_hint=0x7fffffffd150) at ../../../../gobject/gclosure.c:804
#72 0x00007ffff4e8ad3e in signal_emit_unlocked_R (node=node@entry=0xd0ba90, detail=detail@entry=0, 
    instance=instance@entry=0xd0e320, emission_return=emission_return@entry=0x0, 
    instance_and_params=instance_and_params@entry=0x7fffffffd1d0) at ../../../../gobject/gsignal.c:3635
#73 0x00007ffff4e933f5 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, 
    var_args=var_args@entry=0x7fffffffd390) at ../../../../gobject/gsignal.c:3391
#74 0x00007ffff4e93e0f in g_signal_emit (instance=instance@entry=0xd0e320, signal_id=<optimized out>, detail=detail@entry=0)
    at ../../../../gobject/gsignal.c:3447
#75 0x00007ffff189b36f in _gdk_frame_clock_emit_paint (frame_clock=frame_clock@entry=0xd0e320)
    at ../../../../gdk/gdkframeclock.c:640
#76 0x00007ffff189bac9 in gdk_frame_clock_paint_idle (data=0xd0e320) at ../../../../gdk/gdkframeclockidle.c:459
#77 0x00007ffff1887080 in gdk_threads_dispatch (data=0xfe1860, data@entry=<error reading variable: value has been optimized out>)
    at ../../../../gdk/gdk.c:743
#78 0x00007ffff4b9eb73 in g_timeout_dispatch (source=source@entry=0xaa4250, callback=<optimized out>, user_data=<optimized out>)
    at ../../../../glib/gmain.c:4650
#79 0x00007ffff4b9e0f5 in g_main_dispatch (context=0xd02c80) at ../../../../glib/gmain.c:3177
#80 g_main_context_dispatch (context=context@entry=0xd02c80) at ../../../../glib/gmain.c:3830
#81 0x00007ffff4b9e4c0 in g_main_context_iterate (context=0xd02c80, block=block@entry=1, dispatch=dispatch@entry=1, 
    self=<optimized out>) at ../../../../glib/gmain.c:3903
#82 0x00007ffff4b9e7d2 in g_main_loop_run (loop=0x25f6290) at ../../../../glib/gmain.c:4099
#83 0x00007fffec971385 in gtk_main () at ../../../../gtk/gtkmain.c:1323
#84 0x00007ffff494fdae in ffi_call_unix64 () from /usr/lib/x86_64-linux-gnu/libffi.so.6
#85 0x00007ffff494f71f in ffi_call () from /usr/lib/x86_64-linux-gnu/libffi.so.6
#86 0x00007ffff531bdda in ?? () from /usr/lib/python3/dist-packages/gi/_gi.cpython-36m-x86_64-linux-gnu.so
#87 0x00007ffff531d9b8 in ?? () from /usr/lib/python3/dist-packages/gi/_gi.cpython-36m-x86_64-linux-gnu.so
#88 0x000000000045a0e3 in _PyObject_FastCallDict ()
#89 0x000000000054fd37 in ?? ()
#90 0x00000000005546cf in _PyEval_EvalFrameDefault ()
#91 0x000000000054fbe1 in ?? ()
#92 0x000000000054fe6d in ?? ()
#93 0x00000000005546cf in _PyEval_EvalFrameDefault ()
#94 0x000000000054fbe1 in ?? ()
#95 0x000000000054fe6d in ?? ()
#96 0x0000000000552b00 in _PyEval_EvalFrameDefault ()
#97 0x000000000054f0e8 in ?? ()
#98 0x0000000000550116 in ?? ()
#99 0x00000000005546cf in _PyEval_EvalFrameDefault ()
#100 0x000000000054fbe1 in ?? ()
#101 0x0000000000550b93 in PyEval_EvalCode ()
#102 0x000000000042b519 in PyRun_FileExFlags ()
#103 0x000000000042b705 in PyRun_SimpleFileExFlags ()
#104 0x0000000000441fcb in Py_Main ()
#105 0x0000000000421ff4 in main ()