Trying to resolve an issue with a plugin in the admin menus screen, and I’m getting an error in my browser console. It’s reporting that it 'failed to load resource: the server responded with a status of 404 (Not found) the file ‘/domain/wp-content/themes/pro/framework/dist/js/admin/x-menus.js.map’
It seems checking other pages (frontend and backend) .js files that exist are being given a further extension .map? Checking in Chrome this doesn’t happen, so maybe a Safari thing?
But this investigation has raised a concern. I have a large menu with many items. Using the 2017 theme, it loads quickly and downloads 3.78MB. When using the PRO theme, it loads VERY slowly and downloads 48.2MB to display the same menu.
Look forward to your response and advice.