內(nèi)部通信器在正文標(biāo)記之前提供要注入的以下代碼段：<script>  window.intercomSettings = {    app_id: "",    name: "<?php echo json_encode($current_user->name) ?>", // Full name    email: "<?php echo json_encode($current_user->email) ?>", // Email address    created_at: "<?php echo strtotime($current_user->created_at) ?>" // Signup date as a Unix timestamp  };</script>但是，它創(chuàng)建了帶有錯(cuò)誤的啟動(dòng)器;聲明以檢查電子郵件變量。字壓的變量應(yīng)該是什么？