^ array:6 [
  "message" => "method not exists:app\index\controller\Index->index()"
  "file" => "/www/wwwroot/platform_v2/vendor/topthink/framework/src/think/route/dispatch/Controller.php"
  "line" => 107
  "url" => "/"
  "method" => "GET"
  "param" => []
]