场景:
          在git上clone一个项目代码吗laravel版本是5.6 php的版本是7.1 但是运行的时候一直提示错误
          Call to undefined method Eachdemo\Rbac\RbacServiceProvider::loadFactoriesFrom()

解决办法:
            给RbacServiceProvider，手动添加方法，如图所示，

<?php

namespace Eachdemo\Rbac;

use Illuminate\Support\ServiceProvider;
use Illuminate\Database\Eloquent\Factory;

class RbacServiceProvider extends ServiceProvider
{
    /**
     * Register any application services.
     *
     * @return void
     */
    public function register()
    {
        //
    }

    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot()
    {
    	// 注册路由文件
        $this->loadRoutesFrom(__DIR__.'/route/rbac.php');
        // 注册数据库迁移文件
        $this->loadMigrationsFrom(__DIR__.'/database/migrations');
        // 模型工厂
        //$this->loadFactoriesFrom(__DIR__.'/database/factories');

        $this->loadFactories();
    }
    
    protected function loadFactories()
    {
        // 假设你的工厂文件位于 database/factories/rbac 目录下
        $factoryPath = __DIR__.'/../database/factories/rbac';

        if (is_dir($factoryPath)) {
            Factory::load($factoryPath);
        }
    }


}