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After update Prestashop 1.7.7.8 to 1.7.8.1 

PrestaShop Checkout v2.15.5

/commande page show Error 500

When Debug Mode show this information 

undefined function {renderLogo}  in /themes/classic/templates/checkout/_partials/header.tpl

call {renderLogo} generate error 500

When {renderLogo} is remove no more error

Function renderLogo is defined in

/themes/classic/templates/_partials/helpers.tpl