StacktraceTop:
g_type_check_instance_is_a () from /tmp/apport_sandbox_ybs2mi8i/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
xfce_backdrop_loader_closed_cb (loader=0x55dfa7dbb120, image_data=0x55dfa7e149d0) at xfce-backdrop.c:1787
g_closure_invoke () from /tmp/apport_sandbox_ybs2mi8i/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
signal_emit_unlocked_R () from /tmp/apport_sandbox_ybs2mi8i/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
g_signal_emit_valist () from /tmp/apport_sandbox_ybs2mi8i/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
StacktraceTop: check_instance_ is_a () from /tmp/apport_ sandbox_ ybs2mi8i/ usr/lib/ x86_64- linux-gnu/ libgobject- 2.0.so. 0 loader_ closed_ cb (loader= 0x55dfa7dbb120, image_data= 0x55dfa7e149d0) at xfce-backdrop. c:1787 sandbox_ ybs2mi8i/ usr/lib/ x86_64- linux-gnu/ libgobject- 2.0.so. 0 emit_unlocked_ R () from /tmp/apport_ sandbox_ ybs2mi8i/ usr/lib/ x86_64- linux-gnu/ libgobject- 2.0.so. 0 emit_valist () from /tmp/apport_ sandbox_ ybs2mi8i/ usr/lib/ x86_64- linux-gnu/ libgobject- 2.0.so. 0
g_type_
xfce_backdrop_
g_closure_invoke () from /tmp/apport_
signal_
g_signal_