c# - Invalid token while executing xpath -

i getting invalid token error while trying select node using htmlagilitypack

the xpath have used

"//article[contains(@class, 'product-buy')]/div[@class='product-price-wrapper']/div[@class='price']​"

not sure invalid token , how can solve this

i tried other xpaths ' , working fine

there character between last bracket , closing quote. on web page unicode character 'zero width space' (u+200b). can tell trying arrow through string in editor.