[webappdesigner]

answered my own question….

For anyone that has the same problem, bbpress -> includes -> extend -> buddypress -> groups.php

on line 151 change

public function display() {
to
public function display($group_id = NULL) {

[webappdesigner]

Sorry, i did not realise that this was a BBPress issue rather than a BuddyPress one….

where would i find “class BBP_Forums_Group_Extension”