angular.js:13920 TypeError: Cannot read property 'item' of undefined
at EndlessScroller.<anonymous> (angular-endless-scroll.js:519)
at HTMLLIElement.<anonymous> (angular.js:1247)
at Function.each (jquery.js:368)
at jQuery.each (jquery.js:157)
at EndlessScroller._getDimension (angular-endless-scroll.js:514)
at EndlessScroller.clean (angular-endless-scroll.js:296)
at EndlessScroller.check (angular-endless-scroll.js:145)
at EndlessScroller.<anonymous> (angular.js:1248)
at EndlessScroller._throttledCheck (angular-endless-scroll.js:64)
at EndlessScroller.<anonymous> (angular-endless-scroll.js:437)
