Tried enabling SC intelligent recommendations extension and then doing a gulp template:fetch , then got an error when trying to run the local server. 404 file not found on http://localhost:7777/SC.Configuration.js I removed the extension and re-activated, fetched and now it's working again. It may be a conflict with the ItemRelations module in Summit or Bridge theme, that's the only place I saw the SC.Configuration.js. Also found a require here: SuiteCommerce.ItemRecSys.WidgetCct.ItemView