there is a chance that my caracter doesnt move

im having a problem that there is a chance that my game character doesnt move when pressing the buttons i asigned for it im using visual scripting here is the code and the error message

i have placed it in this google document as its huge https://docs.google.com/document/d/1teM3cgCjk3qm8noAvpF6Hh9xxp1qDgYuOHTW3-awr8w/edit?usp=sharing