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WordPress customizer preview not working

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WordPress customizer preview not working

If you login to WordPress Customizer and found that it’s not loading or some settings are not working properly, follow the steps below.

Why is this happening?

  1. It could be due to plugin conflict (conflict between two plugins), or plugin script error in your preview.
  2. It could be your server not having enough memory to run all the software installed. Which includes WordPress, Theme and your large collection of plugins.

Before you start doing something:

  1. Make sure that you have updated WordPress to its latest version
  2. Update your active theme and active plugins to their latest versions
  3. Make sure you have at least PHP 5.6 installed (7.2+ is recommended, required since 2019 – source).
  4. If you are on live server make full backup of your website (files and database – how to?)

 

Increase PHP memory limit.  

It’s recommended to have at least 128MB (256MB is even better). How to?

Deactivate all your plugins

With active Futurio theme deactivate all plugins

  1. Now visit Appearance -> Customize and see if it works properly.
  2. Activate Futurio Extra plugin and see the Customizer if it works properly.
  3. If it works properly, there is a high chance that your server is not having enough memory to run or there is a 3rd party plugin issue.
  4. Re-activate back plugin by plugin.
  5. After every plugin activation, visit your Appearance -> Customize to see if it works
  6. If you have found a plugin that breaks your Appearance -> Customize you can:
    1. Keep the plugin activated and disable all other plugins
    2. Visit Appearance -> Customize and see if it works.
    3. If it works, it is not plugin conflict probably, but your server have not enough resources.
    4. If it does not work, then you have found the plugin that’s causing conflict.

 

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