Fix type error

skouter.go

@@ -3866,7 +3866,7 @@ func setupProxy(r *httputil.ProxyRequest) {
 }
 
 func serve() {
-	files := http.FileServer(http.Dir(""))
+	files := http.FileServerFS(assets)
 	
 	proxy := &httputil.ReverseProxy{
 		Rewrite: setupProxy,