fixed start server command as its value is always None but true

server/src/main.rs

@@ -207,7 +207,7 @@ OPTIONS:
         p.disconnect();
     }
 
-    if let Some(_) = args.value_of("server") {
+    if args.is_present("server") {
         if main_ret == NO_ERR {
             main_ret = start_server(main_ret).await;
         }