We installed themler to test it for prestashop https://test.revitalconcept.com/ We could activate it, but when we try to start customisation, we get error 500 Is there any solution to fix? Thanks

non stop template error http://prestashop.19.i866.cms2-live.billiondigital.com/en/?live_configurator_token=656dfe7059e022733615a1084b967aa5&id_employee=1&id_shop=1