Getting Error in AMP Url , "AMP URL is not an AMP"


I am getting error in AMP Url, webmaster show the error “AMP URL is not an AMP” I am using premium Newspaper wordpress theme. Please help me, how to rectify it.

AMP url Structure like this >> religion-astrology/know-which-zodiac-signs-for-2019-sharadiya-navratri-will-be-auspicious-and-which-will-be-their-lucky-color/29754/?amp

Please use AMP Validator tool