Resolved Website returning "File not found." message instead of serving index.php content

[gennolo]

After upgrading a Centos 7 VM to latest Plesk Obsidian,
a couple of websites started returning an nginx "File not found." message when browsing certain subdirectories
that should serve an "index.php" file (like mydomain.com/mysite/myfolder ).

error_log shows :
AH01071: Got error 'Primary script unknown\n'
at each web request.

When browsing
mydomain.com/mysite/myfolder/index.php (including index.php)
page is working OK

After some investigation, it looks like it has something to do with this .htaccess rule in the folder :
RewriteRule .? %{ENV:BASE}/index.php [L]
which was ok before, and for some reason is ignored now.

Domain configuration is set to FPM served by Apache / PHP 7.1 with Plesk standard settings..
I already tried a "plesk repair web" and checked domain permissions, tried to switch PHP versions etc..
Any help will be really appreciated

 

[JuanjoSC]

See if this works for you:

WordPress installed in subdomain breaks 404 pages of other subdomains

I'm not sure if this happened in 4.8 or was earlier (but i noticed only now). If I add a Wordpress via wp-toolkit, any subsequent updates to Nginx settings produce a bad nginx config in every subdomain belonging to the same domain where there is at least one Wordpress instance added in...

talk.plesk.com

It worked fine for me, disabled wp-toolkit

 

[gennolo]

Thanks Wp-toolkit was the issue !