Liquid force

Function 'getPricePerUnit' does not exist or is not accessible! (oxArticle)

#0 /var/www/vhosts/oxidresponsive.com/httpdocs/tmp/smarty/33ad9e013190b3af9532bddd6fc47e21^%%CB^CB6^CB6C1C15%%listitem_infogrid.tpl.php(154): oxSuperCfg->__call()
#1 /var/www/vhosts/oxidresponsive.com/httpdocs/core/smarty/Smarty.class.php(1870): include('/var/www/vhosts...')
#2 /var/www/vhosts/oxidresponsive.com/httpdocs/tmp/smarty/33ad9e013190b3af9532bddd6fc47e21^%%FC^FCA^FCA347E9%%list.tpl.php(43): Smarty->_smarty_include()
#3 /var/www/vhosts/oxidresponsive.com/httpdocs/core/smarty/Smarty.class.php(1870): include('/var/www/vhosts...')
#4 /var/www/vhosts/oxidresponsive.com/httpdocs/tmp/smarty/33ad9e013190b3af9532bddd6fc47e21^%%F0^F0F^F0F92504%%list.tpl.php(228): Smarty->_smarty_include()
#5 /var/www/vhosts/oxidresponsive.com/httpdocs/core/smarty/Smarty.class.php(1264): include('/var/www/vhosts...')
#6 /var/www/vhosts/oxidresponsive.com/httpdocs/core/oxshopcontrol.php(508): Smarty->fetch()
#7 /var/www/vhosts/oxidresponsive.com/httpdocs/core/oxshopcontrol.php(353): oxShopControl->_render()
#8 /var/www/vhosts/oxidresponsive.com/httpdocs/modules/Zoxid/Framework/Zoxid_Framework_oxshopcontrol.php(7): oxShopControl->_process()
#9 /var/www/vhosts/oxidresponsive.com/httpdocs/core/oxshopcontrol.php(126): Zoxid_Framework_oxshopcontrol->_process()
#10 /var/www/vhosts/oxidresponsive.com/httpdocs/core/oxid.php(40): oxShopControl->start()
#11 /var/www/vhosts/oxidresponsive.com/httpdocs/index.php(26): Oxid::run()
#12 {main};