From 003f98b18c12c9b73cc5edf4da0300d663b384c8 Mon Sep 17 00:00:00 2001
From: Tsvetan Koshutanski <ceckobecko@gmail.com>
Date: Fri, 2 Apr 2021 00:48:36 +0300
Subject: [PATCH] Check if group is set

The actual value is possible to be null,
thus leading to PHP notice without the check.

For PHP7.4
---
 src/mibew/libs/groups.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/mibew/libs/groups.php b/src/mibew/libs/groups.php
index 6e4e92db..bad5487f 100644
--- a/src/mibew/libs/groups.php
+++ b/src/mibew/libs/groups.php
@@ -202,6 +202,10 @@ function get_group_email($group_id)
 {
     // Try to get group email
     $group = group_by_id($group_id);
+    if (empty($group)) {
+        return '';
+    }
+
     if ($group && !empty($group['vcemail'])) {
         return $group['vcemail'];
     }