What should I do to stop this error?
You need to first create a behavior tree in the content browser and then have it selected to run
Sorry I was trying to fix it so i changed the BTAsset to none… But now I added my AITree to BTAsset and it still gives me the same error…
When you try compiling the BP it should give you an error message describing the issue in more detail. The information you’ve shared so far is not enough to tell what’s wrong (like if you’re trying to use it in an AI controller BP?)
Cheers,
–mieszko