From f14eaeb2a0f1366fcc31e68d86901a0662f282a1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gr=C3=A9goire=20Pineau?= <lyrixx@lyrixx.info>
Date: Fri, 14 Nov 2025 17:02:10 +0100
Subject: [PATCH] [AiBundle] Fix fatal error when a value is not defined

---
 src/ai-bundle/config/options.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ai-bundle/config/options.php b/src/ai-bundle/config/options.php
index 0ad9e775f..085d13e66 100644
--- a/src/ai-bundle/config/options.php
+++ b/src/ai-bundle/config/options.php
@@ -882,7 +882,7 @@
                             ->end()
                             ->beforeNormalization()
                                 ->always(function ($v) {
-                                    if (\is_string($v)) {
+                                    if (\is_string($v) || null === $v) {
                                         return $v;
                                     }