Just upgraded to version 3.6.2. When I attempt to log in to htpps://roatanschools.org/moodle, I arrive at https://roatanschools.org/moodle/admin/index.php?cache=1, and see the following error message: Exception - Call to a member function add() on null. I can try the page request again and do arrive at the log in page for my Moodle. In addition, once I am in Moodle, I cannot navigate to Site Administration. If I attempt to do so, I receive the same error message.