点击提交按钮，报错信息如下：

An Error occurred while handling another error:
yii\base\ViewNotFoundException: The view file does not exist: /www/wwwroot/shop.imooc.com/basic/views/layouts/main.php in /www/wwwroot/shop.imooc.com/basic/vendor/yiisoft/yii2/base/View.php:229
Stack trace:
#0 /www/wwwroot/shop.imooc.com/basic/vendor/yiisoft/yii2/base/Controller.php(396): yii\base\View->renderFile('/www/wwwroot/sh...', Array, Object(app\controllers\SiteController))
#1 /www/wwwroot/shop.imooc.com/basic/vendor/yiisoft/yii2/base/Controller.php(382): yii\base\Controller->renderContent('<div class="sit...')
#2 /www/wwwroot/shop.imooc.com/basic/vendor/yiisoft/yii2/web/ErrorAction.php(128): yii\base\Controller->render('error', Array)
#3 /www/wwwroot/shop.imooc.com/basic/vendor/yiisoft/yii2/web/ErrorAction.php(107): yii\web\ErrorAction->renderHtmlResponse()
#4 [internal function]: yii\web\ErrorAction->run()
#5 /www/wwwroot/shop.imooc.com/basic/vendor/yiisoft/yii2/base/Action.php(94): call_user_func_array(Array, Array)
#6 /www/wwwroot/shop.imooc.com/basic/vendor/yiisoft/yii2/base/Controller.php(156): yii\base\Action->runWithParams(Array)
#7 /www/wwwroot/shop.imooc.com/basic/vendor/yiisoft/yii2/base/Module.php(523): yii\base\Controller->runAction('error', Array)
#8 /www/wwwroot/shop.imooc.com/basic/vendor/yiisoft/yii2/web/ErrorHandler.php(97): yii\base\Module->runAction('site/error')
#9 /www/wwwroot/shop.imooc.com/basic/vendor/yiisoft/yii2/base/ErrorHandler.php(111): yii\web\ErrorHandler->renderException(Object(yii\web\HttpException))
#10 [internal function]: yii\base\ErrorHandler->handleException(Object(yii\web\HttpException))
#11 {main}
Previous exception:
yii\web\HttpException: incorrect region, please use up-z2.qiniu.com in /www/wwwroot/shop.imooc.com/basic/vendor/crazyfd/yii2-qiniu/Qiniu.php:77
Stack trace:
#0 /www/wwwroot/shop.imooc.com/basic/modules/controllers/ProductController.php(59): crazyfd\qiniu\Qiniu->uploadFile('/tmp/phpvkJhRs', '59a154c67223a')
#1 /www/wwwroot/shop.imooc.com/basic/modules/controllers/ProductController.php(34): app\modules\controllers\ProductController->upload()
#2 [internal function]: app\modules\controllers\ProductController->actionAdd()
#3 /www/wwwroot/shop.imooc.com/basic/vendor/yiisoft/yii2/base/InlineAction.php(57): call_user_func_array(Array, Array)
#4 /www/wwwroot/shop.imooc.com/basic/vendor/yiisoft/yii2/base/Controller.php(156): yii\base\InlineAction->runWithParams(Array)
#5 /www/wwwroot/shop.imooc.com/basic/vendor/yiisoft/yii2/base/Module.php(523): yii\base\Controller->runAction('add', Array)
#6 /www/wwwroot/shop.imooc.com/basic/vendor/yiisoft/yii2/web/Application.php(102): yii\base\Module->runAction('admin/product/a...', Array)
#7 /www/wwwroot/shop.imooc.com/basic/vendor/yiisoft/yii2/base/Application.php(380): yii\web\Application->handleRequest(Object(yii\web\Request))
#8 /www/wwwroot/shop.imooc.com/basic/web/index.php(12): yii\base\Application->run()
#9 {main}