filter null values for UserManager::getByEmail

Signed-off-by: Georg Ehrke <developer@georgehrke.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/lib/private/User/Manager.php b/lib/private/User/Manager.php
index 494a345be59..16a911b90ac 100644
--- a/lib/private/User/Manager.php
+++ b/lib/private/User/Manager.php
@@ -591,8 +591,12 @@ class Manager extends PublicEmitter implements IUserManager {
 	public function getByEmail($email) {
 		$userIds = $this->config->getUsersForUserValue('settings', 'email', $email);
 
-		return array_map(function($uid) {
+		$users = array_map(function($uid) {
 			return $this->get($uid);
 		}, $userIds);
+
+		return array_values(array_filter($users, function($u) {
+			return ($u instanceof IUser);
+		}));
 	}
 }