Help!Error"Accessed None trying to read property"

I get This error once I cancel the play test for my project. I try to click where the source is this is where it leads me.

Why does this error Occur? Help

Thank you and Happy Holidays!!

Ohh okay Ill try to change it. Thank you very much

It’s a little hard to see what you’ve got going on there, but I’d lay my money on the ‘get class defaults’.

The class defaults is not an instance, so you can’t drag a pin off and do ‘set value as bool’.

It worked, Now I just have to find another instance to “get” for my nodes. Thank you very much!!!

Answer is given by username: ClockworkOcean