Why do I keep getting the error, simple solution please,why is this code giving me an error (I know its in void update but don't know whats wrong)

I keep getting the following error: ![alt text][1] Here is my code:![alt text][2] [1]: /storage/temp/204502-image-2023-02-06-173506000.png [2]: /storage/temp/204501-image-2023-02-06-173426685.png How do I fix this error because I've looked at it for a while and cant seem to see what I've done wrong