Unable to communicate back with site to check for fatal errors, so the PHP change was reverted. You will need to upload your PHP file change by some other means, such as by using SFTP. and more about redux-extensions

[dovy]

Thanks for the error. Can you share more details about your site or version of WordPress or anything else? A support url would really help.

[FeerLaas]

hi, i have same problem... My wp version is 5.4.1 and my site, when i enabled redux framework really slow... and when switch off redux get speed..

[dovy]

So very odd. We're going to be removing the redirect completely, so that will go away soon. You're welcome to install Redux 4.0 and test: http://wordpress.org/plugins/redux-framework-4. This problem should be gone.