Enable and configure the Asset Optimizer in SXA - how to fix min files loading issue

• Enable the Asset Optimizer globally

  To enable the optimizer globally: In the Content Editor, navigate to /sitecore/system/Settings/Foundation/Experience Accelerator/Theming/Optimiser and for both Scripts and Styles select Concatenate and Minify to minify all files and concatenate them into one file. Note Changes take effect immediately after the item is saved. Anonymous users might not see the changes until you publish. If you are using ES6, this back-end optimization is not compatible. Instead, use ECMAScript 6+.

• Change the optimization settings for a specific site

  To change the optimization settings for a specific site: In the Content Editor, navigate to sitecore/content/Tenant/Site/Presentation/Page Designs. In the Asset Optimization section, in the Styles Optimizing Enabled and Scripts Optimizing Enabled fields, to override styles and scripts optimization settings, select: Default – to inherit global settings Yes – to always enable optimization for this site. No – to always disable optimization for this site.