小编flo*_*wer的帖子

我收到了这个错误

GuzzleHttp\Exception\ClientException: Client error: `POST https://api.mailgun.net/v3/sandbox22f9hisujrundei134m9nf84.mailgun.org/messages.mime` resulted in a `400 BAD REQUEST` response:
{
  "message": "Sandbox subdomains are for test purposes only. Please add your own domain or add the address to authoriz (truncated...)

当我尝试单元测试我的功能？我怎么能解决这个问题？

运行此React代码时出现此错误:

import React from 'react';
import ReactDOM from 'react-dom';

ReactDOM.render(
  <div id="root">
  <h1>Hello, world!</h1></div>,
  document.querySelector('#root')
);

这是错误:

bundle.js:1194 Uncaught Error:_registerComponent(...):目标容器不是DOM元素.(...)

我必须从 5.1 更新到 5.4

这是带有`5.1的邮件代码

Mail::queue('emails.welcome_client', compact('user', 'userPassword'), function ($message) use ($user, $adminEmails) {
    $message->subject('Welcome to Enterprise Solutions!');

    $message->from(env('MAIL_FROM_ADDRESS'), env('MAIL_FROM_NAME'));
    $message->to($user->email);
    foreach($adminEmails as $adminEmail) {
        $message->bcc($adminEmail);
    }
});

我必须从 Laravel 5.1 更改为 5.4 所以我创建对象邮件

这里是

<?php

namespace App\Mail;

use Illuminate\Bus\Queueable;
use Illuminate\Mail\Mailable;
use Illuminate\Queue\SerializesModels;
use Illuminate\Contracts\Queue\ShouldQueue;

class ClientMail extends Mailable
{
    use Queueable, SerializesModels;

    /**
     * Create a new message instance.
     *
     * @return void
     */
    public $user;
    // protected $content;

    public function __construct($user)
    {
        $this->content = $user;
    }

    /** …

我有以下功能：

function get_user_browser() {
  $u_agent = $_SERVER['HTTP_USER_AGENT'];
  $ub = 'unknown';
  if (preg_match('/Trident\/7.0; rv:11.0/', $u_agent)) {
    $ub = "ie ie-11";
  }
  elseif(preg_match('/MSIE/i', $u_agent)) {
    $ub = "ie";
  }
  elseif(preg_match('/Chrome/i', $u_agent)) {
    $ub = "chrome";
  }
  elseif(preg_match('/Firefox/i', $u_agent)) {
    $ub = "firefox";
  }
  elseif(preg_match('/Safari/i', $u_agent)) {
    $ub = "safari";
  }
  elseif(preg_match('/Opera/i', $u_agent)) {
    $ub = "opera";
  }
  return 'browser-'.$ub;
}

我在两个刀片中声明了此函数，但收到此错误：

FPHP 致命错误：无法在第 7 行 /home/storage/framework/views/0800146a0e35b205e9a66bb2f00ffb2f 中重新声明 get_user_browser() （之前在 /home/storage/framework/views/0800146a0e35b205e9a66bb2f00ffb2f:7 中声明）

我该如何修复它？