Hi

FYI.

Using the option "Set As Members' Theme" causes this error on my test forum which is running v4.7.2 beta 2 with PHP 7.4.30.

 

 

 

Please could you let me know which theme? Also have you tested this with all 3rd party disabled? I am unable to replicate this locally

That's a bug which was fixed for an upcoming release 

Thanks guys