Cornerstone critical error after install

Hi, Each and every time I install Cornerstone I get this error: “There has been a critical error on this website. Please check your site admin email inbox for instructions”.

I go to CPanel and remove the plugin and WordPress works again.

Fresh install of WordPress, Cache clean, the first plugin I tried was Cornerstone so that’s the one that’s causing me a problem.

Some Site Health info:


server_architecture: Linux 3.10.0-962.3.2.lve1.5.26.3.el7.x86_64 x86_64

httpd_software: Apache

php_version: 7.4.16 64bit

php_sapi: cgi-fcgi

max_input_variables: 1000

time_limit: 30

memory_limit: 40M

admin_memory_limit: 256M

max_input_time: 60

upload_max_filesize: 2M

php_post_max_size: 8M

curl_version: 7.74.0 OpenSSL/1.1.1k

suhosin: false

imagick_availability: false

pretty_permalinks: true

htaccess_extra_rules: true


extension: mysqli

server_version: 5.7.32

client_version: mysqlnd 7.4.16

Any thoughts?

Hello Alan,

Thanks for writing to us.

It might be the issue of PHP memory, I recommend the following troubleshooting.

Increase PHP Memory Limit

I recommend increasing the following server settings to the specified value or larger. Please consult your web host for all these server settings

PHP configuration recommended

memory_limit = 512M
upload_max_filesize = 512M
post_max_size = 512M
max_execution_time = 300
max_input_time = 300

Recommended MySQL configuration

max_allowed_packet = 16Mb
innodb_log_file_size = 128mb

After setting the server configuration to the specified value or larger if it doesn’t work for you please share your details in a secure note. Please provide the following details

  • WordPress Login URL
  • Admin level username and password
  • FTP Details

You can find the Secure Note button at the bottom of your posts


Hi, thanks for the fast reply!

I changed the memory in the “wp-config.php” file in cPanel and added the line:

define(‘WP_MEMORY_LIMIT’, ‘512M’); and that seems to have worked!

I can’t seem to find the “php.ini file” anywhere on cPanel though??

I have used the X theme and Cornerstone before though so I cant understand why it wouldn’t work this time?

Anyway let’s see how we get on now!!

Thanks again!

Hi Alan,

Glad to know that it works, please let us know if you find any further issues with this.


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