your template is including power store components to it which are in the /store folder. so there are framework files at /webassist/framework and /store/webassist/framework, this is causing the conflict.
i updated the page and and the template to use the framework files ion the store folder:
<?php require_once('../store/webassist/framework/framework.php'); ?>
<?php require_once('../store/webassist/framework/library.php'); ?>
to fix the issue.
there is now an issue with image paths, for example, the CMS image paths are looking at:
this is not working because the images upload folder is in the store folder, the correct path would be: