Switch to block editor returns a white page

Hi, I’m using Classic editor 1.6.2 (God bless the creators) and the theme Hestia.
I’ve always used Classic editor but wanted to give a try to Gutenberg, just to see if maybe i can adapt to it.
Well, I can’t switch to it no matter what I try:
I tried changing editor inside pages/articles
I tried using “Edit (block editor)”
I tried disabling completely Classic editor and every other plugin related to it
I switched to Block editor in tools-writing
No matter if I edit or create new pages/articles, the result is always the same, the article-page if I use block is completely, totally white. No text, no tools, nothing. The moment I switch back to classic, everything returns to normal.
Any suggestions?