Ionic App调用Native iOS函数，错误：Ionic Native：deviceready在5000毫秒内未触发

Question

我在iOS中有一个离子应用程序，我们在其中显示一个本机屏幕并在其中调用Web服务。从服务器获得响应后，我们将响应再次发送到离子屏幕并关闭本机屏幕。

但是回调无法正常工作

警告：离子本机：deviceready在5000毫秒内未触发。当插件处于不一致状态时，可能会发生这种情况。尝试从plugins /中删除插件，然后重新安装。

public static function updateLessPaymentHead(int $receivable_payment_head_id, int $total_receivable) 
    {
        $payment_head = DB::table('receivables_payment_head')
            ->where('id', $receivable_payment_head_id)
            ->update(
                ['total_receivables' => DB::raw('total_receivables' - $total_receivable),
                    'total_payment' => DB::raw('total_payment' - $total_receivable),
                ]);

        return $payment_head;
}

iOS代码是

 this.nativewebview.nativeMethod({}).subscribe((result) => {

  console.log('SUCCESS API CALL FROM NATIVE ------ >>>>> ');

   this.handleCloseWebView();


}, (err) => {
  console.log(err);

});

谁能告诉我可能是什么问题？