StacktraceTop: ?? () ?? () _g_closure_invoke_va (closure=0x1831e80, return_value=0x0, instance=0x1816890, args=0x7fffc9cc8c98, n_params=0, param_types=0x0) at /build/buildd/glib2.0-2.35.7/./gobject/gclosure.c:840 g_signal_emit_valist (instance=0x1816890, signal_id=<optimized out>, detail=0, var_args=var_args@entry=0x7fffc9cc8c98) at /build/buildd/glib2.0-2.35.7/./gobject/gsignal.c:3225 g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.35.7/./gobject/gsignal.c:3370
StacktraceTop: invoke_ va (closure=0x1831e80, return_value=0x0, instance=0x1816890, args=0x7fffc9cc 8c98, n_params=0, param_types=0x0) at /build/ buildd/ glib2.0- 2.35.7/ ./gobject/ gclosure. c:840 emit_valist (instance= 0x1816890, signal_ id=<optimized out>, detail=0, var_args= var_args@ entry=0x7fffc9c c8c98) at /build/ buildd/ glib2.0- 2.35.7/ ./gobject/ gsignal. c:3225 <optimized out>, signal_ id=<optimized out>, detail=<optimized out>) at /build/ buildd/ glib2.0- 2.35.7/ ./gobject/ gsignal. c:3370
?? ()
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_g_closure_
g_signal_
g_signal_emit (instance=