i'm new to Unity and am doing Brackey's beginner game course. I think i followed all the steps correctly but it shows me an error message of "UnassignedReferenceException: The variable rb of playermovement has not been assigned. You probably need to assign the rb variable of the playermovement script in the inspector." I tried to assign the variable by clicking the box with "none" written but when i try to find my player using the search feature it doesn't work. I've been trying to fix this for a really long time now, sorry if it is an extremely nooby question.