unhighlight by rangy object

[raheem93]

I am trying to unhighlight the highlight by sending the rangy object but it gives error
Cannot read property 'nodeType' of undefined

i am calling unhighlight method by following syntax
hltr.removeHighlights('{"w":"<span class="highlighted" data-timestamp="1522665031488" style="background-color: rgb(255, 255, 123);" data-highlighted="true">","p":"ipsum","r":"3:1","s":27,"t":5}');