Whenever i try to open certain pages file on my iphone, pages app immediately shut down

i can open and edit it on my ipad Pages

but certainly i can’t open it on my iphone Pages..

i restarted the Pages app, iphone, and re-installed the Pages app as well, but the problem wasn’t solved.

other pages files are opened well both on iphone and ipad, but certain pages file is opened on only my ipad, not Iphone....