Error in calback for function 'wp_ffpc_redirect_callback'

hm.

that function is in wp-ffpc-acache.php which is included from advanced-cache.php, therefore available at any time; in theory, of course.

Now the filter is in wp-ffpc-class.php, as:
add_filter('redirect_canonical', 'wp_ffpc_redirect_callback', 10, 2);

I do not see where it goes off track; I’ll do my best though.

Hi

I’m having the same issue on my WP4 + WP-FFPC site.

This issue needs resolving as I can’t serve a site with errors to mu customers (nor do maaaany other users).

OK, while I was digging the net I found the solution.

Every 2nd save of settings in WP-FFPC deletes wp-content/advanced-cache.php file. If you are having the problem as described above, all you need to do is enter WP-FFPC settings and press Save settings ONE TIME.

wp-content/advanced-cache.php should be recreated and Warning is gone.

I don’t know why this happens, petermolnar, do you?

Excellent job on the plugin!

When setting my .htaccess to remove the trailing slash, I received the same error. This is my .htaccess setup:

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /wordpress/
RewriteRule ^index\.php$ - [L]

RewriteRule ^(.*)/$ /$1 [L,R=301]

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /wordpress/index.php [L]
</IfModule>