Wordpress admin login gives me blank page back
Hi all I am having this problem with Wordpress admin login and W3 Total Caching.
Lets start from the beginning. When I visit the website it appears to be working just fine. When I try to login on the Wordpress admin page it returns me a blank page. No errors nothing just a blank page.
This is not the first time it happens, so I called my hostings provider to check if anything is going on with the servers. So we solved the problem last time by just rebooting the server. That worked website was running again and could login in to wp admin area.
Now today same thing happens again. We did some research my hostings provider comes up with this error from wordpress.
mod_fcgid: stderr: PHP Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 64 bytes) in /public_html/wp-includes/functions.php on line 3559.
I have no idea what this problem is and where it comes from.
Probably this is not the only problem with this site. We are also using W3 Total Caching for this site. Are there any issue's know with this plug-in that can make the server do strange things?
Kind regards
Answer
Using
define( 'WP_DEBUG', true );
is definitely the way to go.
We had recently removed a cacheing plugin but it had left behind some pieces of code in wp-settings that needed removing.