flutter setState() called after dispose()

Reference resources
The following problem appears

Unhandled Exception: setState() called after dispose(): Page#f39ff(lifecycle state: defunct, not mounted)

setState After interface logout , That must not work
What happens is that the two interfaces switch quickly and frequently ,setState I can't react when I refresh the global variables
Processing mode
Judge mounted Just fine

if(mounted){
    
       setState(() {
    
           ........
       });
     }
    });