With Nex, you are using a commercial theme provided by Vandam. Please contact their support to clarify the problem: https://themeforest.net/item/nex-factory-industrial-wordpress/21200260/support – questions about commercial products are not permitted here in the forum.
Yes it is not an an issue with the theme it was with your update, I manage several websites this was just one of them.
After restoring backups on each site the problems went away but then came the pop up to update the database, maybe this step was skipped when updating WordPress
Also some plugins like updraft plus and others had problems and had to issue updates.. I am not sure the extent of the damage, this also happend on the last WordPress update not with theme but breaking popular plugins, google site kit, rank math, etc.
I don’t know if or why before your release that it is not tested lately.
I just want to give you the info so you know. and what I did to fix it to help others.
I don’t know who you’re addressing with “you”. The forum here is run by volunteers – normal users like you and me. See also: https://ww.wp.xz.cn/support/guidelines/
WordPress 6.4 contained 2 problems that were fixed a few hours ago with 6.4.1. Please update to this version to see if your problems are solved. Regardless of this, there may of course also be compatibility issues of your commercial theme with newer WordPress versions that you need to clarify with their support.
