fatal error in php 7.1

[ddanforthmrss]

PHP Fatal error: Cannot unset $this in /rcastera/session/src/rcastera/Browser/Session/Session.php on line 40

looks like it's a 7.1 compatability issue

[danutz0501]

Just comment out or delete the __destruct() function problem solved.
The destructor is being called when an object is being deleted (destroyed) the unset is a method deleting (destroying) an object - thus calling a possible destructor.