Okay, I feel really silly now. But it seems like I have solved it. But might as well put the error message here:
SCRIPT ERROR: trait: Invalid get index 'Pretty Voice' (on base: 'Dictionary'). At: res://files/scripts/origins.gd:39 SCRIPT ERROR: slavetabopen: Invalid get index 'tags' (on base: 'Nil'). At: res://files/scripts/slave_tab.gd:107
Thanks anyway.