Fatal error: Uncaught Error: Call to a member function connection() on null in /Users/chenshuai/www.chenshuai.com/www.imshuai.cn/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Model.php:1138 Stack trace: #0 /Users/chenshuai/www.chenshuai.com/www.imshuai.cn/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Model.php(1104): Illuminate\Database\Eloquent\Model::resolveConnection(NULL) #1 /Users/chenshuai/www.chenshuai.com/www.imshuai.cn/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Model.php(936): Illuminate\Database\Eloquent\Model->getConnection() #2 /Users/chenshuai/www.chenshuai.com/www.imshuai.cn/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Model.php(847): Illuminate\Database\Eloquent\Model->newBaseQueryBuilder() #3 /Users/chenshuai/www.chenshuai.com/www.imshuai.cn/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Model.php(885): Illuminate\Database\Eloquent\Model->newModelQuery() #4 /Users/chenshuai/www.chenshuai.com/www.imshuai.cn/vendor/laravel/framework/src/Illuminat in /Users/chenshuai/www.chenshuai.com/www.imshuai.cn/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Model.php on line 1138