accessed none trying to read property

i am having trouble with the error “accessed none trying to read property”

i am trying to remove my “chaser” asset from an array once it starts chasing. i trying to use event dispatchers and bind event but i keep getting the error

i have added my screenshots down below :slight_smile: thank you!

(i am only able to add 1 image as i am new here, so other screenshots are in the replies)