/admin/admin.php?action=surveysecurity yields:

ERROR: column reference "uid" is ambiguous LINE 3: group by uid, users_name, full_name ^:SELECT p.*, u.users_name, u.full_name FROM "lime_survey_permissions" AS p INNER JOIN "lime_users" AS u ON p.uid = u.uid WHERE p.sid = 15648 AND u.uid != 3 group by uid, users_name, full_name ORDER BY u.users_name

Postgresql requires any returned fields to appear in the GROUP BY statement or be used in an aggregate function (ie. min(), max(), etc), and also requires an unambiguous column reference even when columns are equal.

The easiest solution would probably be to just drop the group by statement around line 1727 in admin/html.php (I'm not sure if that will cause duplicates).