.svg sprite preloaded need appropriate 'as' value

I just installed this module and dropped a test display field into a node page via Layout.

I'm getting the following console error:

The resource ./modules/contrib/better_social_sharing_buttons/assets/dist/sprites/social-icons--square.svg was preloaded using link preload but not used within a few seconds from the window's load event. Please make sure it has an appropriate `as` value and it is preloaded intentionally.