Revolution Slider Not Working On Home Page

salim100

Hello, I've installed Bethme for my website and it's working fine and after a month the slider doesn't display in the home page and in the console it gives me this error: 

rs6.min.js?ver=6.3.3:39 Uncaught TypeError: Cannot read property 'width' of undefined

  at Function.initLayer (rs6.min.js?ver=6.3.3:39)

  at Function.animateTheLayers (rs6.min.js?ver=6.3.3:39)

  at h (rs6.min.js?ver=6.3.3:37)

  at HTMLElement.<anonymous> (rs6.min.js?ver=6.3.3:37)

  at Function.each (jquery.min.js?ver=3.5.1:2)

  at s.fn.init.each (jquery.min.js?ver=3.5.1:2)

  at s.fn.init.revredraw (rs6.min.js?ver=6.3.3:37)

  at e.<anonymous> (rs6.min.js?ver=6.3.3:37)

  at ce (rbtools.min.js?ver=6.3.3:26)

  at rbtools.min.js?ver=6.3.3:26