BUGFIX: Error trying to OwnerGroups() method on boolean value

This issue occurs when a page has "Inherit from parent page" for content
review option and a review date, and its parent has "Disable content
review" for content review option.

src/Reports/PagesWithoutReviewScheduleReport.php

@@ -154,7 +154,7 @@ class PagesWithoutReviewScheduleReport extends Report
 
         $options = $record->getOptions();
 
-        if ($options->OwnerGroups()->count() == 0 && $options->OwnerUsers()->count() == 0) {
+        if ($options && $options->OwnerGroups()->count() == 0 && $options->OwnerUsers()->count() == 0) {
             return false;
         }