Catchable Fatal Error: Object of class __PHP_Incomplete_Class could not be converted to string

Question

I\'m having an error when I want to open a simple page. This is the full error:

ContextErrorException: Catchable Fatal Error: Object of class __PHP_In

Answer 1

For me help'd clearing cache/cookies in browser. (in browsers session was stored old version of user's entity).

Answer 2

This error usually means that you try to deserialze object without loaded class for that object. So you should somehow define this class (e.g. including file with it) and then deserialize it.