[tony_sologubov]

@ajeetsingh,

Judging by error messages in the log, there is a problem on 107 line in the classes/XLite/Module/Wevbkulsoftware/PreorderSales/Controller/Admin/Product.php file and I assume that the code you quoted earlier is correct:

/** 
     * Page key 
     */ 
    const PAGE_VARI = 'preorders'; 


public function getPages() 
    { 
        $list = parent::getPages(); 

        if (!$this->isNew()) { 
            $list = array_merge( 
                array_slice($list, 0, 5), 
                array(static::PAGE_VARI => static::t('PreorderSales')), 
                array_slice($list, 5) 
            ); 
        } 

        return $list; 
    } 



protected function getPageTemplates() 
    { 
        $list = parent::getPageTemplates(); 

        if (!$this->isNew()) { 
            $list = array_merge( 
                array_slice($list, 0,5), 
                array(static::PAGE_VARI => 'modules/Webkulsoftware/PreorderSales/preorders/body.twig'), 
                array_slice($list, 5) 
            ); 
        } 

        return $list; 
    }  

Could you please show the full code of that file?

Tony