StacktraceTop: g_type_check_instance_cast () from /tmp/apport_sandbox_s19CfB/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 on_source_added (manager=<optimized out>, source=0x56340e3c9460, enabled=<optimized out>, self=0x56340e5424f0) at gcal-quick-add-popover.c:298 ffi_call_unix64 () from /tmp/apport_sandbox_s19CfB/usr/lib/x86_64-linux-gnu/libffi.so.6 ffi_call () from /tmp/apport_sandbox_s19CfB/usr/lib/x86_64-linux-gnu/libffi.so.6 g_cclosure_marshal_generic () from /tmp/apport_sandbox_s19CfB/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
StacktraceTop: check_instance_ cast () from /tmp/apport_ sandbox_ s19CfB/ usr/lib/ x86_64- linux-gnu/ libgobject- 2.0.so. 0 0x56340e3c9460, enabled=<optimized out>, self=0x56340e54 24f0) at gcal-quick- add-popover. c:298 sandbox_ s19CfB/ usr/lib/ x86_64- linux-gnu/ libffi. so.6 sandbox_ s19CfB/ usr/lib/ x86_64- linux-gnu/ libffi. so.6 marshal_ generic () from /tmp/apport_ sandbox_ s19CfB/ usr/lib/ x86_64- linux-gnu/ libgobject- 2.0.so. 0
g_type_
on_source_added (manager=<optimized out>, source=
ffi_call_unix64 () from /tmp/apport_
ffi_call () from /tmp/apport_
g_cclosure_