From 3b9caf5272b3fc4edb91e29e47b9d0ea47deb46f Mon Sep 17 00:00:00 2001
From: Bill Tomczak <bill@joomlashack.com>
Date: Thu, 7 Dec 2023 14:10:09 -0800
Subject: [PATCH] Special handling for array parameters

---
 src/admin/library/MailingLists/AbstractClient.php | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/admin/library/MailingLists/AbstractClient.php b/src/admin/library/MailingLists/AbstractClient.php
index a4ca5d8e..e074a906 100644
--- a/src/admin/library/MailingLists/AbstractClient.php
+++ b/src/admin/library/MailingLists/AbstractClient.php
@@ -182,17 +182,26 @@ protected function getDocumentParam(int $documentId, string $key, $default = nul
     {
         if ($document = $this->getDocument($documentId)) {
             $value = $document->get('params')->get($key);
+            if (is_array($value)) {
+                $value = array_filter($value);
+            }
         }
 
         if (empty($value)) {
             // Try category lookup
             if ($category = $this->getCategory($document->get('cate_id'))) {
                 $value = $category->get('params')->get($key);
+                if (is_array($value)) {
+                    $value = array_filter($value);
+                }
             }
 
             if (empty($value)) {
                 // Try global
                 $value = static::getParams()->get($key);
+                if (is_array($value)) {
+                    $value = array_filter($value);
+                }
             }
         }