Here’s where we updated to 10.4 https://libertysons.org/, and there happened a version conflict most likely, with this error screen: 
Just went ahead into Plugin’s Editor, took out all that php, and it started to work again.
We updated on a lot of other places, where we had the latest WordPress version installed, and all worked, this one was different due to older version of WordPress installed 5.6
Hello !
So now you have updated the WP Version and everything is in order ?
I’m not sure if this is still an issue or not.
Thank you !
Update 10.4 is to full of bugs you would have to be insane to use this sandbox product.
We took out all the php code from CSS Analyzer in order for it to work.
Hello !
Can you let me know if the issue is still available only with theme plugins active. If the issue is still there we can take a look via e-mail at contact@tagdiv.com and provide the following:
– admin url and credentials
– A link to this topic in order to identify you
Our team will take a look !
Also please note that this plugin is still a BETA version, however there have been a pretty big number of users that have updated and have found using CSS Analyzer be useful.
Thank you !
