Can’t edit pages

Hi @tdepp,

Please try disabling all plugins and maybe select a default theme, and see if the issue persists. If it doesn’t, enable themes and plugins one by one, to find the possible cause.

Though, it sounds to me like a plugin conflict after an update. If you wanna read up on white screen of death in wp, you can do that here

https://codex.wordpress.org/Common_WordPress_Errors#The_White_Screen_of_Death

You can share the “batch of code error” to further help to resolve the error.