Gin Deeply Rooted Static Files Not Loading

I have a gin application in which not all the static files load. Deeply rooted static files do not load.

Static file path

  repository
      assets
           style1
              css/style.css
               vendor/aos/bootstrap

Files in the aos folder do not load, but files in the CSS folder load. I have tried router.Static("/assets", "./repository/assets") but it does not work; I have equally tried router.StaticFS as shown in the doc, but it is still the same.