试图在中间件Laravel中获得非对象的属性

我在中间件中遇到一个奇怪的问题，其中return $next($request);的行抛出Trying to get a property of a non object错误，但仅在我的生产服务器上，我无法在本地重新创建此问题。

<?php
namespace App'Http'Middleware;
use Closure;
class NotSubscribed
{
    /**
     * Handle an incoming request.
     *
     * @param  'Illuminate'Http'Request  $request
     * @param  'Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {
        if (isSubscribed($request->user()) || getOrganisation()->skip_plan) {
                flashError('You already have a subscription to Tradesoft.');
                return redirect(url(''));
        }
        return $next($request);
    }
}