Most of the times while editing the posts or any third party related contents its start getting fatal error related with the php memory as its almost crossing the the allowed memory which has set at the server side. If this happens then simply we needs to increase the php memory limit for that particular account at the server side and it can be done by copying the php.ini file under the /public_html directory for that account.
You need to first copy the php.ini under the document root of that particular account and need to ensure that you make your php.ini file recursive.
To make your php.ini settings recursive and take place across your entire account you’ll want to modify or create a .htaccess file in your /public_html directory with the following code:
SetEnv PHPRC /home/username/public_html << here you need to replace the username with the actual username
eg :
root@server# cat .htaccess
SetEnv PHPRC /home/username/public_html
# BEGIN WordPress
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ – [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]# END WordPress
Save the php.ini file and then refresh your blank page again, and this time you will be able to see the homepage of your domain.