Binding '<Super>M' failed!

Connected to Application Indicator Service.
Building new application entry: :1.4  with icon: keyboard
new_application_item ("Chat")
id_prop_update: assertion `priv->root != NULL' failed
about to connect to the signals
indicator-sound: new_volume_slider_widget
scrub-widget::property_update for prop visible
signal caught - sink input while muted with value 0
new_application_item ("(null)")
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
Just caught a style change event
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
Signal: Entry Removed
Just caught a style change event
Just caught a style change event
Just caught a style change event
Just caught a style change event
signal caught - sink input while muted with value 0
Just caught a style change event
Just caught a style change event
Just caught a style change event
Just caught a style change event
Just caught a style change event
Building new application entry: :1.202  with icon: keyboard
signal caught - sink input while muted with value 0
Signal: Entry Removed
Just caught a style change event
Just caught a style change event
Just caught a style change event
Just caught a style change event
Just caught a style change event
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
Just caught a style change event
Just caught a style change event
Just caught a style change event
Just caught a style change event
Just caught a style change event
Building new application entry: :1.211  with icon: keyboard
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0
signal caught - sink input while muted with value 0