When I call my custom module’s helper function in catalog/product/list.phtml file my list page is gonna black.

In phtml :

$  helperToday = Mage::helper('today_special/data'); $  arr = $  helperToday->getCustomAttributeAndCategoryIdCollection(); 

Having these lines in System Log:

017-12-13T05:01:48+00:00 ERR (3): Warning: include(): Failed opening 'Mage/Today/Helper/Data.php' for inclusion (include_path='/opt/bitnami/apps/magento/htdocs/app/code/local:/opt/bitnami/apps/magento/htdocs/app/code/community:/opt/bitnami/apps/magento/htdocs/app/code/core:/opt/bitnami/apps/magento/htdocs/lib:.:/opt/bitnami/php/lib/php:/opt/bitnami/frameworks/smarty/libs')  in /opt/bitnami/apps/magento/htdocs/lib/Varien/Autoload.php on line 94 2017-12-13T05:02:10+00:00 ERR (3): Warning: include(Mage/Today/Helper/Data.php): failed to open stream: No such file or directory  in /opt/bitnami/apps/magento/htdocs/lib/Varien/Autoload.php on line 94 

Config.xml File:

<global>         <helpers>           <today_special>               <class>Today_Special_Helper</class>           </today_special>         </helpers>     </global> 

Helper File:

<?php class Today_Special_Helper_Data extends Mage_Core_Helper_Abstract {       public function getCustomAttributeAndCategoryIdCollection()      {         $  todayStartOfDayDate  = Mage::app()->getLocale()->date()                 ->setTime('00:00:00')                 ->toString(Varien_Date::DATETIME_INTERNAL_FORMAT);          $  todayEndOfDayDate  = Mage::app()->getLocale()->date()                 ->setTime('23:59:59')                 ->toString(Varien_Date::DATETIME_INTERNAL_FORMAT);         $  bundledIds = array();         $  todayIds = array();         $  finalIds();          $  _productCollectionForTodaysSpecial = Mage::getModel('catalog/product')                      ->getCollection()                      ->joinTable('catalog_category_product', 'product_id=entity_id', array('category_id'=>'category_id'), null, 'left')                      ->addAttributeToFilter('category_id', array('in' => array('finset' => '20')))                      ->addAttributeToFilter(array(array('attribute' => 'today_special', 'eq' => '1')))                      ->addAttributeToFilter('today_special_date', array('or'=> array(                     0 => array('date' => true, 'to' => $  todayEndOfDayDate),                     1 => array('is' => new Zend_Db_Expr('null')))                 ), 'left')                 ->addAttributeToFilter('today_special_end_date', array('or'=> array(                     0 => array('date' => true, 'from' => $  todayStartOfDayDate),                     1 => array('is' => new Zend_Db_Expr('null')))                 ), 'left')                 ->addAttributeToFilter(                     array(                         array('attribute' => 'today_special_date', 'is'=>new Zend_Db_Expr('not null')),                         array('attribute' => 'today_special_end_date', 'is'=>new Zend_Db_Expr('not null')))                     );                  $  _productCollectionForBundledSpecial = Mage::getModel('catalog/product')                      ->getCollection()                      ->joinTable('catalog_category_product', 'product_id=entity_id', array('category_id'=>'category_id'), null, 'left')                      ->addAttributeToFilter('category_id', array('in' => array('finset' => '22')))                      ->addAttributeToFilter(array(array('attribute' => 'is_bundled', 'eq' => '1')))                      ->addAttributeToFilter('show_bundled_start_date', array('or'=> array(                     0 => array('date' => true, 'to' => $  todayEndOfDayDate),                     1 => array('is' => new Zend_Db_Expr('null')))                 ), 'left')                 ->addAttributeToFilter('show_bundled_enddate', array('or'=> array(                     0 => array('date' => true, 'from' => $  todayStartOfDayDate),                     1 => array('is' => new Zend_Db_Expr('null')))                 ), 'left')                 ->addAttributeToFilter(                     array(                         array('attribute' => 'show_bundled_start_date', 'is'=>new Zend_Db_Expr('not null')),                         array('attribute' => 'show_bundled_enddate', 'is'=>new Zend_Db_Expr('not null')))                     );              if(count($  _productCollectionForTodaysSpecial)>0)             {                 foreach ($  _productCollectionForTodaysSpecial as $  collection) {                     foreach ($  collection as $  data){                         $  todayIds[] = $  data['entity_id'];                     }                 }             }             if(count($  _productCollectionForBundledSpecial)>0)             {                 foreach ($  _productCollectionForBundledSpecial as $  collection) {                     foreach ($  collection as $  data){                         $  bundledIds[] = $  data['entity_id'];                     }                 }             }              if(!empty($  bundledIds) && !empty($  todayIds))             {                 $  finalIds = array_unique(array_merge($  bundledIds,$  todayIds));             }             else if(empty($  bundledIds) && !empty($  todayIds))             {                 $  finalIds = array_unique($  todayIds);             }             else if(!empty($  bundledIds) && empty($  todayIds))             {                 $  finalIds =  array_unique($  bundledIds);             }             else             {                 $  finalIds = array();             }          return $  finalIds;      } }