Display Error: The display template had an error. You can correct it by fixing the template or by changing the display template used in either the Web Part properties or Result Types.

I have followed the following link to create a custom display template :-

http://www.drisky.co.uk/2014/04/01/how-to-create-a-three-lines-search-display-template/

but after adding the new display template i got the following error:-

Display Error: The display template had an error. You can correct it by fixing the template or by changing the display template used in either the Web Part properties or Result Types.


~sitecollection/_catalogs/masterpage/Display Templates/Content Web Parts/Item_ThreeLines.html: 'xmlns:mso' is a duplicate attribute name. Line 1, position 118..

so can anyone advice please?

Thanks