The issue you’re experiencing could be due to the order of the rewrite rules in your .htaccess file. The order of the rules is important because the first rule that matches the incoming URL will be executed, and subsequent rules may not be evaluated.
To resolve the conflict, you can try reordering the rules in your .htaccess file. Here’s a modified version of your code with the rules reordered:
Options +FollowSymLinks -MultiViews
ErrorDocument 404 /404.php
RewriteEngine On
RewriteCond %{HTTP_HOST} ^domain.com$
RewriteRule ^(.*)$ https://www.domain.com/$1 [R=301,L]
RewriteRule ^([^/]+)/?$ page.php?slug=$1 [L,QSA]
In this updated version, the rule for redirecting the domain from non-www to www is placed before the rule for rewriting page URLs. This ensures that the domain redirect is handled first, and then the page URL rewriting takes place.
The last rule RewriteRule ^([^/]+)/?$ page.php?slug=$1 [L,QSA] is modified to capture any non-empty slug in the URL and rewrite it to page.php?slug=$1. This rule should match URLs like domain.com/pagename and rewrite them internally to page.php?slug=pagename.
Make sure to replace domain.com with your actual domain name in the code.
With this reordering of rules, the conflict between the page URL rewriting and other rules should be resolved. However, keep in mind that other factors, such as server configuration or conflicting rules outside of the provided code, could also impact the behavior.
