"xxx Not cleaned up by garbage collection"

Yes it solved the issue. Thank you so much.

I need one more help. Since you have my project now, I am asking this question.

Is it possible to write one blueprint class for all the objects.

For example: in Level1, I have 3 objects; Cone, Cube and Cylinder. For these 3 objects, I have created 3 blueprints which does the same process. Is it possible to keep one blueprint class for all those 3 objects?