I am new to Godot so my question is probably often ask by beginners but I don't found any answer on the Internet or on this forum.
I created a class wich controls timer and label. So I call my timer and label with get_node(). I created a method start() to launch it when needed. But I get this error in start() when I try to run my project.
Invalid call. Nonexistent function 'setwaittime' in base 'Nil'.
I don't understand why I can't do this and how to proced. You can see my script in the linked image.