From 49c254a4e607a86b46c10ea186fd4b3a04bed2d7 Mon Sep 17 00:00:00 2001
From: David Goodwin <david@codepoets.co.uk>
Date: Sun, 1 Sep 2024 19:23:58 +0100
Subject: [PATCH] avoid undefined array key quota.... see #853

---
 model/MailboxHandler.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/model/MailboxHandler.php b/model/MailboxHandler.php
index 5a912f8c..17b9a8d7 100644
--- a/model/MailboxHandler.php
+++ b/model/MailboxHandler.php
@@ -228,7 +228,7 @@ class MailboxHandler extends PFAHandler {
         }
 
         // Avoid trying to store '' in an integer field
-        if ($this->values['quota'] === '') {
+        if (array_key_exists('quota', $this->values) && $this->values['quota'] === '') {
             $this->values['quota'] = 0;
         }