Yes, this is the content of the file:
<IfModule mod_rewrite.c>
Options -MultiViews
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule \.(js|css|jpeg|jpg|gif|png|ico|map|webp)(\?|$) /404error.php [L,NC]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
This is the file the "download this file"-link in the first post provides.
The necessary mods should also be ok