Fails to save settings on moodle 3.3.

[cdaly2]

Hello,
I am using activequiz on moodle 3.3 and I get an error message when I attempt to modify the review settings.
The error message I am getting is:
Notice: Undefined index: pageurl in /var/www/html/moodle/mod/activequiz/classes/activequiz.php on line 335

I cannot change the review settings.

I am using moodle version 3.3.1+ (Build: 20170907)
and active quiz version 2017010400

Thanks,
Charlie