Ocassionally people get:
SCRIPT ERROR: addrelations: Invalid get index 'id' (on base: 'Nil').
At: res://files/globals.gd:1013
This is harmless, though the exact cause is not known. redle provided a solution on Discord:
If you simply add to globals.gd right after func addrelations(person, person2, value): and put in the lines
if person == null || person2 == null:
return
Be aware that the forum changes tabs to spaces (change the spaces before the "if" to 1 tab, and the spaces before the "return" line to 2 tabs)