Patch for magento/magento2 issue 32916.

m2-issue-32916.diff

From 1274e9c6cb5ce5109db658f1d40bb27e6c1f7a08 Mon Sep 17 00:00:00 2001
From: Reense <reense@tickles.nl>
Date: Mon, 12 Jul 2021 10:23:31 +0200
Subject: [PATCH] Fixex undefined indexes in ShippingMethod source.

---
 Model/Source/ShippingMethod.php | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/Model/Source/ShippingMethod.php b/Model/Source/ShippingMethod.php
index 77e5390..19c5c7e 100644
--- a/Model/Source/ShippingMethod.php
+++ b/Model/Source/ShippingMethod.php
@@ -45,9 +45,10 @@ class ShippingMethod implements OptionSourceInterface
         $carriers = $this->scopeConfig->getValue('carriers');
 
         foreach ($carriers as $carrierCode => $carrier) {
-            $shippingTitle = $carrier['title'];
+            $shippingTitle = $carrier['title'] ?? $carrierCode;
+            $active = $carrier['active'] ?? false;
 
-            if (!$carrier['active']) {
+            if (!$active) {
                 $shippingTitle .= __(' (disabled)');
             }
 
-- 
2.30.0