Self-registration not assigning to group

[PhatWheZ]

LDAP authentication working well, however when new users sign in for the first time, they are prompted with a notification saying

Oops, something went wrong…
insert into “userGroups” (“groupId”, “userId”) values ($1, $2), ($3, $4) returning “groupId” - insert or update on table “userGroups” violates foreign key constraint “usergroups_groupid_foreign”

When the user tries to enter into the wiki for a 2nd time, they are authenticated, but dont have any access to content until they are assigned to a group