I have a project Yii. I call model from my controller to display data in a table

$model = new NewAccForm();
$post = Post::model()->find($model);
var_dump($post);

I run the code on an error:

 PHP warning

include(Post.php) [<a href='function.include'>function.include</a>]: failed to open stream:

No such file or directory

E:\wamp\www\yii\framework\YiiBase.php(427)

415                         {
416                             include($classFile);
417                             if(YII_DEBUG && basename(realpath($classFile))!==$className.'.php')
418                                 throw new CException(Yii::t('yii','Class name "{class}" does not match class

file "{file}".', array( 419 '{class}'=>$className,

420                                     '{file}'=>$classFile,

421                                 )));

422                             break;

423                         }

424                     }

425                 }

426                 else

427                     include($className.'.php');

428             }

429             else  // class name with namespace in PHP 5.3

430             {
431                 $namespace=str_replace('\\','.',ltrim($className,'\\'));

432                 if(($path=self::getPathOfAlias($namespace))!==false)

433                     include($path.'.php');

434                 else

435                     return false;

436             }
437             return class_exists($className,false) || 

interface_exists($className,false);

438         }

439         return true;

Stack Trace
#0    
+  E:\wamp\www\yii\framework\YiiBase.php(427): YiiBase::autoload()
#1    
 unknown(0): YiiBase::autoload("Post")
#2    
–  E:\wamp\www\yii\amica\protected\controllers\front\ReportController.php(10):

spl_autoload_call("Post") 05 '1'=>'Mới', 06 '2' => 'Đã Xóa' 07 ); 08 public function actionIndex() { 09 $model = new ReportForm(); 10 $post = Post::model()->find($model); 11 var_dump($post); 12 echo "

Thông báo lỗi cho ban quản trị

"; 13 } 14 15 public function actionCreate() { #3
+ E:\wamp\www\yii\framework\web\actions\CInlineAction.php(49): ReportController->actionIndex() #4
+ E:\wamp\www\yii\framework\web\CController.php(308): CInlineAction->runWithParams(array("r" => "report")) #5
+ E:\wamp\www\yii\framework\web\CController.php(286): CController->runAction(CInlineAction) #6
+ E:\wamp\www\yii\framework\web\CController.php(265): CController->runActionWithFilters(CInlineAction, array()) #7
+ E:\wamp\www\yii\framework\web\CWebApplication.php(282): CController->run("") #8
+ E:\wamp\www\yii\framework\web\CWebApplication.php(141): CWebApplication->runController("report") #9
+ E:\wamp\www\yii\framework\base\CApplication.php(180): CWebApplication->processRequest() #10
– E:\wamp\www\yii\amica\protected\components\WebApplicationEndBehavior.php(24): CApplication->run() 19 // Attach the changeModulePaths event handler 20 // and raise it. 21 $this->onModuleCreate = array($this, 'changeModulePaths'); 22 $this->onModuleCreate(new CEvent($this->owner)); 23 24 $this->owner->run(); // Run application. 25 } 26 27 // This event should be raised when CWebApplication 28 // or CWebModule instances are being initialized. 29 public function onModuleCreate($event) { #11
unknown(0): WebApplicationEndBehavior->runEnd("front") #12
+ E:\wamp\www\yii\framework\base\CComponent.php(261): call_user_func_array(array(WebApplicationEndBehavior, "runEnd"), array("front")) #13
– E:\wamp\www\yii\amica\index.php(13): CComponent->__call("runEnd", array("front")) 08 defined('YII_DEBUG') or define('YII_DEBUG',true); 09 // specify how many levels of call stack should be shown in each log message 10 defined('YII_TRACE_LEVEL') or define('YII_TRACE_LEVEL',3); 11 12 require_once($yii); 13 Yii::createWebApplication($config)->runEnd('front'); #14
+ E:\wamp\www\yii\amica\index.php(13): CWebApplication->runEnd("front")

why is there such a problem? and how to fix it? Thanks.