foreach ($coursemanagerroles as $roleid) {
$role = get_record('role','id',$roleid);
$canseehidden = has_capability('moodle/role:viewhiddenassigns', $context);
+ $roleid = (int) $roleid;
if ($users = get_role_users($roleid, $context, true, '', 'u.lastname ASC', $canseehidden)) {
foreach ($users as $teacher) {
$fullname = fullname($teacher, has_capability('moodle/site:viewfullnames', $context));