Nonexistent function '...' on base 'Nil' - what is this?

[system]

	Attention	Topic was automatically imported from the old Question2Answer platform.
	Asked By	avlakos

hello.
recently i’ve discovered a problem with nonexistent functions ‘get_children’ and ‘is_colliding’ in base ‘Nil’. i’ve also managed to stop them from occuring, but i still feel like i miss something. i tried to google the ‘Nil’ problem, but couldn’t find an explanation.

thanks for the response in advance!

[system]

	Reply From:	Inces

This means that node you called does not exist. Most of the times it is because incorrect referencing of a node when introducing it as variable ( like onready var node = get_node(something)).