CGI/FastCgi 已停止工作

 public function exception()
    {
        DB::table('a')->get();
    }

一段很简单的代码。
故意测试一下异常，按道理应该是会抛出异常吧。
现在就发生了一个很奇怪的事情，直接CGI/FastCgi停止工作了。
有遇到过类似问题的朋友吗？请指点一二哦

是个新安装的项目哦
异常类代码如下

<?php

namespace App\Exceptions;

use App\Libraries\Send;
use Exception;
use Illuminate\Foundation\Exceptions\Handler as ExceptionHandler;

class Handler extends ExceptionHandler
{
    use Send;
    /**
     * A list of the exception types that are not reported.
     *
     * @var array
     */
    protected $dontReport = [
        //
    ];

    /**
     * A list of the inputs that are never flashed for validation exceptions.
     *
     * @var array
     */
    protected $dontFlash = [
        'password',
        'password_confirmation',
    ];

    /**
     * Report or log an exception.
     *
     * @param  \Exception $exception
     * @return void
     */
    public function report(Exception $exception)
    {
        parent::report($exception);
    }

    /**
     * Render an exception into an HTTP response.
     *
     * @param  \Illuminate\Http\Request $request
     * @param  \Exception $exception
     * @return \Illuminate\Http\Response
     */
    public function render($request, Exception $exception)
    {
        if ($exception instanceof BaseException) {
            return self::errorArray($exception->getArray());
        }
        return parent::render($request, $exception);
    }
}