Note: This troubleshooting guide may require that you make server-side changes to your website. If you are not comfortable making those changes, you will need to contact your hosting provider for assistance. 

The Visual Builder not loading may be caused by a number of things and often there is no error attached to indicate the problem. Listed below you will find a few things that can cause issues with the Visual Builder initialization.

PHP Limits

Each environment is set up differently and hosting providers can limit PHP directives value for various reasons.  

Here is a list of configuration directives that are optimal for running a WordPress website:

memory_limit 256M
post_max_size 128M
max_execution_time 300
upload_max_filesize 64M
max_input_time 600
max_input_vars 6000

PHP Version

We recommend running the PHP 7.0+ version (or at least PHP 5.6). Most hosting providers have an option to change the PHP version from their cPanel, however, if that is not the case you can always reach out to them and they should be able to take care of it for you.

Cache

Caching is a very complex set of systems that can easily cause conflicts between scripts. Make sure to always clear all your caches once a plugin, theme and the WordPress core has been updated.

Cache may include:
Browser Cache (Tutorials on clearing your browser cache)
Plugin Cache
CDN Cache
Server-side Cache

Plugin(s) Conflict

Sometimes plugins can conflict with a theme or with each other. 

Disable all your plugins and see if the problem persists. If everything is working once the plugins were disabled it means there's a conflict with a plugin or maybe even a set of plugins.
Enable the plugins one by one to identify the one that is creating the conflict.

The latest version

Make sure that you are running the latest version of Divi, Extra or the Divi Builder plugin.

How to update the Divi or Extra Theme

How to update the Divi Builder Plugin

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