advanced-cache.php file keeps getting deleted

on save, wp-ffpc first removes the advanced-cache.php file then it writes it, that is the root of your problem.

comment out from https://github.com/petermolnar/wp-ffpc/blob/master/wp-ffpc-class.php#L992 to https://github.com/petermolnar/wp-ffpc/blob/master/wp-ffpc-class.php#L997

Is there a point to deleting the file first?
file_put_contents will overwrite the file by default.

The file removal was removed from the plugin recently; this should be fixed.

Hi Peter,

I am getting the same error

error: Advanced cache file (/…/wp-content/advanced-cache.php) is not writeable!
Please change the permissions on the file.

Permissions on the file are: -rw-r—– 1 XXXX XXXX 0 Apr 11 07:55 advanced-cache.php

I have tried re-saving the setting but no luck

Any ideas?

But did you try changing the permissions so your webserver can write to that file? Looks like you XXXXed out the owner and group of that file so we can’t see.

I just hid the users, full output is included

Permissions on the file are:
-rw-r----- 1 root root 0 Apr 11 07:55 advanced-cache.php

I have given permission to the root user (I realise I probably shouldn’t be using this user but I understand the risks)

sudo chown -R www-data:www-data /var/www
sudo usermod -aG www-data root
sudo chown -R 774 /var/www