Uncomment NAvigator

fast_med_flutter/lib/main.dart

       theme: ThemeData(
         textTheme: GoogleFonts.cabinTextTheme(textTheme),
         ),
-      home: NavigationPage(),
+      home: WelcomePage(),
     );
   }
 

fast_med_flutter/lib/welcome.dart

       print("User found");
       Token = email.text;
 
-      // Navigator.push(
-      //     context, MaterialPageRoute(builder: (context) => NavigationPage()));
+      Navigator.push(
+          context, MaterialPageRoute(builder: (context) => NavigationPage()));
 
     }
   }