无法查看产品页-无效的方法Mage_Catalog_Model_Category::isComposite(Array

除了查看产品外，网站运行良好，我只收到以下错误

  Invalid method Mage_Catalog_Model_Category::isComposite(Array
  (
  )
  )
Trace:
  #0 /var/www/vhosts/MYTESTDOMAIN.co.uk/httpdocs/app/design/frontend/default/ma_enzo/template/magentothem/relatedslider/relatedslider.phtml(28): Varien_Object->__call('isComposite', Array)
  #1 /var/www/vhosts/MYTESTDOMAIN.co.uk/httpdocs/app/design/frontend/default/ma_enzo/template/magentothem/relatedslider/relatedslider.phtml(28): Mage_Catalog_Model_Category->isComposite()
  #2 /var/www/vhosts/MYTESTDOMAIN.co.uk/httpdocs/app/code/core/Mage/Core/Block/Template.php(241): include('/var/www/vhosts...')
  #3 /var/www/vhosts/MYTESTDOMAIN.co.uk/httpdocs/app/code/core/Mage/Core/Block/Template.php(272): Mage_Core_Block_Template->fetchView('frontend/defaul...')
  #4 /var/www/vhosts/MYTESTDOMAIN.co.uk/httpdocs/app/code/core/Mage/Core/Block/Template.php(286): Mage_Core_Block_Template->renderView()
  #5 /var/www/vhosts/MYTESTDOMAIN.co.uk/httpdocs/app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Core_Block_Template->_toHtml()
  #6 /var/www/vhosts/MYTESTDOMAIN.co.uk/httpdocs/app/code/core/Mage/Core/Block/Text/List.php(43): Mage_Core_Block_Abstract->toHtml()
  #7 /var/www/vhosts/MYTESTDOMAIN.co.uk/httpdocs/app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Core_Block_Text_List->_toHtml()
  #8 /var/www/vhosts/MYTESTDOMAIN.co.uk/httpdocs/app/code/core/Mage/Core/Block/Abstract.php(637): Mage_Core_Block_Abstract->toHtml()
  #9 /var/www/vhosts/MYTESTDOMAIN.co.uk/httpdocs/app/code/core/Mage/Core/Block/Abstract.php(581): Mage_Core_Block_Abstract->_getChildHtml('right', true)
  #10 /var/www/vhosts/MYTESTDOMAIN.co.uk/httpdocs/app/design/frontend/default/ma_enzo/template/page/2columns-right.phtml(54): Mage_Core_Block_Abstract->getChildHtml('right')
  #11 /var/www/vhosts/MYTESTDOMAIN.co.uk/httpdocs/app/code/core/Mage/Core/Block/Template.php(241): include('/var/www/vhosts...')
  #12 /var/www/vhosts/MYTESTDOMAIN.co.uk/httpdocs/app/code/core/Mage/Core/Block/Template.php(272): Mage_Core_Block_Template->fetchView('frontend/defaul...')
  #13 /var/www/vhosts/MYTESTDOMAIN.co.uk/httpdocs/app/code/core/Mage/Core/Block/Template.php(286): Mage_Core_Block_Template->renderView()
  #14 /var/www/vhosts/MYTESTDOMAIN.co.uk/httpdocs/app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Core_Block_Template->_toHtml()
  #15 /var/www/vhosts/MYTESTDOMAIN.co.uk/httpdocs/app/code/core/Mage/Core/Model/Layout.php(555): Mage_Core_Block_Abstract->toHtml()
  #16 /var/www/vhosts/MYTESTDOMAIN.co.uk/httpdocs/app/code/core/Mage/Core/Controller/Varien/Action.php(390): Mage_Core_Model_Layout->getOutput()
  #17 /var/www/vhosts/MYTESTDOMAIN.co.uk/httpdocs/app/code/core/Mage/Cms/Helper/Page.php(137): Mage_Core_Controller_Varien_Action->renderLayout()
  #18 /var/www/vhosts/MYTESTDOMAIN.co.uk/httpdocs/app/code/core/Mage/Cms/Helper/Page.php(52): Mage_Cms_Helper_Page->_renderPage(Object(Mage_Cms_IndexController), 'no-route')
  #19 /var/www/vhosts/MYTESTDOMAIN.co.uk/httpdocs/app/code/core/Mage/Cms/controllers/IndexController.php(75): Mage_Cms_Helper_Page->renderPage(Object(Mage_Cms_IndexController), 'no-route')
  #20 /var/www/vhosts/MYTESTDOMAIN.co.uk/httpdocs/app/code/core/Mage/Core/Controller/Varien/Action.php(418): Mage_Cms_IndexController->noRouteAction()
  #21 /var/www/vhosts/MYTESTDOMAIN.co.uk/httpdocs/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(250): Mage_Core_Controller_Varien_Action->dispatch('noRoute')
  #22 /var/www/vhosts/MYTESTDOMAIN.co.uk/httpdocs/app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
  #23 /var/www/vhosts/MYTESTDOMAIN.co.uk/httpdocs/app/code/core/Mage/Core/Model/App.php(354): Mage_Core_Controller_Varien_Front->dispatch()
  #24 /var/www/vhosts/MYTESTDOMAIN.co.uk/httpdocs/app/Mage.php(684): Mage_Core_Model_App->run(Array)
  #25 /var/www/vhosts/MYTESTDOMAIN.co.uk/httpdocs/index.php(89): Mage::run('', 'store')
  #26 {main}

有什么想法吗？