I know it is probably fine, but I have to ask. The variable you are using IsValid on is the same one you are plugging into the “add to viewport” node right? You just have a different copy of the same exact variable above the pic cutoff?
And when it spams “accessed none” it is indeed still spamming it specifically about the “add to viewport” node? And there are no other “add to viewport” nodes in your graph?
This is just really weird for it to validate a variable and then say it isn’t valid immediately after is all.