scrolling screenshot

so when I take a screenshot and open it it says couldn't decode image it's with the power and volume down screenshot but the three finger screenshot works but I'm trying to use the scroll screenshot but I can't because it just doesn't work for some reason this happened after I upgraded to the...

Please check this article on how to take scrolling screenshots on your Xiaomi smartphone easily:- http://mymidiary.blogspot.com/2017/09/taking-mi-scrolling-screenshots.html Have fun!!!