I am receiving this error when attempting to open Edit Title & Properties on any page in version 11.0. It does not make a difference if the page is published or in draft status.
Thank you in advance
There is probably a custom page Attribute, which is not set up properly.
Have a look in Administration / Settings / Advanced, then ContentView » Controls » FrontendPages » Views.
There is probably an attribute with properties set up as stated in the message.
My guess :)