From 0d7b29f6a16bc0c307a134a80fe2db083e43ab34 Mon Sep 17 00:00:00 2001
From: Ralf Becker <RalfBecker@outdoor-training.de>
Date: Wed, 6 Oct 2021 09:11:59 +0200
Subject: [PATCH] fix PHP 8.0 sending mail: Illegal offset type in isset or
 empty

---
 mail/inc/class.mail_compose.inc.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mail/inc/class.mail_compose.inc.php b/mail/inc/class.mail_compose.inc.php
index a723aa10ae..0a6078d3d4 100644
--- a/mail/inc/class.mail_compose.inc.php
+++ b/mail/inc/class.mail_compose.inc.php
@@ -551,7 +551,7 @@ class mail_compose
 			}
 			if ($sendOK)
 			{
-				$workingFolder = $activeFolder;
+				$workingFolder = $activeFolder['mailbox'];
 				$mode = 'compose';
 				$idsForRefresh = array();
 				if (isset($_content['mode']) && !empty($_content['mode']))