Only change 2 lines having line number 357,363 under plugins/events-manager/classes/em-event-post-admin.php to
add_meta_box(’em-event-group’, __(‘Group Ownership’,’dbem’), ‘bp_em_meta_box_group’,’event-recurring’, ‘side’,’low’);
change this metabox code for both of the lines that I mention
It solved my same issue.
