validatePass does not exist [ 2.0 版本 ]

本来都好好的，
不知道改了什么东西

提交表单就报错validatePass does not exist

百度也查不到相关信息

{"name":"Exception","message":"Class validatePass does not exist","code":-1,"type":"ReflectionException","file":"/home/wwwroot/y3.com/vendor/yiisoft/yii2/di/Container.php","line":428,"stack-trace":["#0 /home/wwwroot/y3.com/vendor/yiisoft/yii2/di/Container.php(428): ReflectionClass->__construct('validatePass')","#1 /home/wwwroot/y3.com/vendor/yiisoft/yii2/di/Container.php(364): yii\di\Container->getDependencies('validatePass')","#2 /home/wwwroot/y3.com/vendor/yiisoft/yii2/di/Container.php(156): yii\di\Container->build('validatePass', Array, Array)","#3 /home/wwwroot/y3.com/vendor/yiisoft/yii2/BaseYii.php(349): yii\di\Container->get('validatePass', Array, Array)","#4 /home/wwwroot/y3.com/vendor/yiisoft/yii2/validators/Validator.php(226): yii\BaseYii::createObject(Array)","#5 /home/wwwroot/y3.com/vendor/yiisoft/yii2/base/Model.php(458): yii\validators\Validator::createValidator('validatePass', Object(app\models\Book), Array, Array)","#6 /home/wwwroot/y3.com/vendor/yiisoft/yii2/base/Model.php(420): yii\base\Model->createValidators()","#7 /home/wwwroot/y3.com/vendor/yiisoft/yii2/base/Model.php(189): yii\base\Model->getValidators()","#8 /home/wwwroot/y3.com/vendor/yiisoft/yii2/base/Model.php(785): yii\base\Model->scenarios()","#9 /home/wwwroot/y3.com/vendor/yiisoft/yii2/base/Model.php(729): yii\base\Model->safeAttributes()","#10 /home/wwwroot/y3.com/vendor/yiisoft/yii2/base/Model.php(861): yii\base\Model->setAttributes(Array)","#11 /home/wwwroot/y3.com/controllers/AjaxController.php(73): yii\base\Model->load(Array, 'SugGest')","#12 /home/wwwroot/y3.com/controllers/AjaxController.php(67): app\controllers\AjaxController->setbooka(Array)","#13 [internal function]: app\controllers\AjaxController->actionBook()","#14 /home/wwwroot/y3.com/vendor/yiisoft/yii2/base/InlineAction.php(57): call_user_func_array(Array, Array)","#15 /home/wwwroot/y3.com/vendor/yiisoft/yii2/base/Controller.php(157): yii\base\InlineAction->runWithParams(Array)","#16 /home/wwwroot/y3.com/vendor/yiisoft/yii2/base/Module.php(528): yii\base\Controller->runAction('book', Array)","#17 /home/wwwroot/y3.com/vendor/yiisoft/yii2/web/Application.php(103): yii\base\Module->runAction('ajax/book', Array)","#18 /home/wwwroot/y3.com/vendor/yiisoft/yii2/base/Application.php(386): yii\web\Application->handleRequest(Object(yii\web\Request))","#19 /home/wwwroot/y3.com/web/index.php(15): yii\base\Application->run()","#20 {main}"]}