yii\base\InvalidRouteException: Unable to resolve the request "site/error". in /var/yun_sync_campus/vendor/yiisoft/yii2/base/Module.php:461
Stack trace:
#0 /var/yun_sync_campus/vendor/yiisoft/yii2/web/ErrorHandler.php(80): yii\base\Module->runAction('site/error')
#1 /var/yun_sync_campus/vendor/yiisoft/yii2/base/ErrorHandler.php(95): yii\web\ErrorHandler->renderException(Object(yii\web\NotFoundHttpException))
#2 [internal function]: yii\base\ErrorHandler->handleException(Object(yii\web\NotFoundHttpException))
#3 {main}
Previous exception:
yii\base\InvalidRouteException: Unable to resolve the request "". in /var/yun_sync_campus/vendor/yiisoft/yii2/base/Module.php:461
Stack trace:
#0 /var/yun_sync_campus/vendor/yiisoft/yii2/web/Application.php(83): yii\base\Module->runAction('', Array)
#1 /var/yun_sync_campus/vendor/yiisoft/yii2/base/Application.php(375): yii\web\Application->handleRequest(Object(yii\web\Request))
#2 /var/yun_sync_campus/task/web/index.php(21): yii\base\Application->run()
#3 {main}

Next yii\web\NotFoundHttpException: Page not found. in /var/yun_sync_campus/vendor/yiisoft/yii2/web/Application.php:95
Stack trace:
#0 /var/yun_sync_campus/vendor/yiisoft/yii2/base/Application.php(375): yii\web\Application->handleRequest(Object(yii\web\Request))
#1 /var/yun_sync_campus/task/web/index.php(21): yii\base\Application->run()
#2 {main}