From 62ad932aa75c199fcda2faf02098bf944a685bdb Mon Sep 17 00:00:00 2001
From: Tsvetan Koshutanski <ceckobecko@gmail.com>
Date: Tue, 23 Mar 2021 15:12:42 +0200
Subject: [PATCH] Properly check if variable is set before referencing it

For PHP 7.4
---
 src/mibew/libs/chat.php | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/mibew/libs/chat.php b/src/mibew/libs/chat.php
index 061b9993..b390096e 100644
--- a/src/mibew/libs/chat.php
+++ b/src/mibew/libs/chat.php
@@ -446,9 +446,10 @@ function setup_chatview_for_user(
 
     // Set default operator's avatar
     $operator = operator_by_id($thread->agentId);
-    $data['chat']['avatar'] = $operator['vcavatar']
-        ? $asset_url_generator->generate($operator['vcavatar'])
-        : '';
+    $data['chat']['avatar'] = '';
+    if (!empty($operator['vcavatar'])) {
+        $data['chat']['avatar'] = $asset_url_generator->generate($operator['vcavatar']);
+    }
 
 
     return $data;