Additional nginx directives and file sharing

I think that I found an issue when I want to activate Wordpress Permalinks for nginx.

I follow this instructions https://kb.plesk.com/en/126908 and when I put this directive

if (!-e $request_filename) {
rewrite ^.*$ /index.php last;
}

I have a problem with file sharing. Admin user does not exist.
I did the second solution and it works in all domains.