Error: Class 'Page\PageException' not found

/home/inventure/data/web/inventure.com.ua/mod/Page/IndexController.php:31

/home/inventure/data/web/inventure.com.ua/mod/Page/IndexController.php:31
29
$response->page = Page::getRepository()->findOneBy(['route'=>$rid]);
30
if($response->page->getStatus()!=1)
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throw new PageException(404);
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$manager = new Manager($this->getModule()->getApp());
33
$node = $this->getService('sync')->getEntityNode($response->page);
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$manager->add($node);
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$response->editable = $node;
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if($request->isMethod('POST')){
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$manager->update($request->request->all());
38
}
#0 /home/inventure/data/web/inventure.com.ua/cms/actual/lib/Skynar/Controller/AbstractController.php(107): Page\IndexController->view(Object(Skynar\Http\Request))
#1 /home/inventure/data/web/inventure.com.ua/cms/actual/lib/Skynar/Module/AbstractModule.php(50): Skynar\Controller\AbstractController->getResponse(Object(Skynar\Http\Request))
#2 /home/inventure/data/web/inventure.com.ua/cms/actual/lib/Skynar/Application.php(160): Skynar\Module\AbstractModule->processRequest(Object(Skynar\Http\Request), Object(Core\Route))
#3 /home/inventure/data/web/inventure.com.ua/cms/actual/lib/Skynar/Application.php(116): Skynar\Application->processRequest(Object(Skynar\Http\Request))
#4 /home/inventure/data/web/inventure.com.ua/www/index.php(94): Skynar\Application->run()
#5 {main}