Evaluate students page not working in Totara 13

[K-GavinWilliamsonKing]

In version 13.1 after going to OJT administration > Evaluate students an error is thrown, presumably because the embedded report doesn't have a content class.

Error info below:

Content class \totara_reportbuilder\rb\content\ojt_completion_type does not exist

Debug info:
Error code: contentclassnotexist
Stack trace:
line 494 of /lib/setuplib.php: moodle_exception thrown
line 3133 of /totara/reportbuilder/lib.php: call to print_error()
line 4467 of /totara/reportbuilder/lib.php: call to reportbuilder->get_content_restrictions()
line 4240 of /totara/reportbuilder/lib.php: call to reportbuilder->collect_restrictions()
line 5043 of /totara/reportbuilder/lib.php: call to reportbuilder->build_query()
line 5030 of /totara/reportbuilder/lib.php: call to reportbuilder->get_data()
line 4933 of /totara/reportbuilder/lib.php: call to reportbuilder->get_data_for_table()
line 94 of /mod/ojt/report.php: call to reportbuilder->display_table()