AI controller pending kill error at branch

[aeon38]

Hello everyone I am pretty new with AI and I have follow this tutorial [Behavior Tree Quick Start Guide][1]

Everything works fine except when I kill my AI I receive this error in my message log

The error points me to a branch in my AI controller.

Here is my behavior tree:

I know it might be because my AI controller still try to access the actor that was destroyed but I don’t know why.
I have search on the forum for a similar issue but I could find any fix. If someone could help me out it would be awesome.

[Marcis]

Use Is Valid macro before the branch.

[aeon38]

Hey thx for your awnser sadly its still not working with the Is valide macro still got the error