Can't create e new page since the update

Hi, i’m french and i speak a poor english

when i create a new page, what ever i want to put, text or image, if i publish, nothing appear in result page, it’s semm like a blank page, i have combined to make wit ava editor, don’t work, then i try to create a fresh new page with the native editor of wordpress “Guttenberg”….i think maybe the ava editor make this fault….buit even with the original editor or ava editor….same result, blank page completly empty without any image or text

Very important, i have try to edit a working page displayed and fine for the moment, of course juste a minor page for me just for see if this bug ruined the displayed page work before……..and boom….when i edit a work page before and update today now these page dosn’t work anymore !…and become a blank page !

But, i can create a new post…and it work, with both editor….bizarre it work for create post but not for create a page

Then, since i discover this bug…i’m afraid to touch or update my default landing page of my website, because i know now for shure if i edit this page my website can appear blank if i edit and update now…..

This is the link of my website : https://dstudio.fr

Thank for your work and i hope you solve my problem