From c72b9c2e2b638225e45ee28a5004779cca7a866f Mon Sep 17 00:00:00 2001
From: team2 <team2@mitho-media.de>
Date: Sat, 25 Apr 2026 23:40:06 +0200
Subject: [PATCH] central config part 1

---
 RETRIEX_VOCABULARY_HOTFIX_README.md | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 RETRIEX_VOCABULARY_HOTFIX_README.md

diff --git a/RETRIEX_VOCABULARY_HOTFIX_README.md b/RETRIEX_VOCABULARY_HOTFIX_README.md
new file mode 100644
index 0000000..47a8621
--- /dev/null
+++ b/RETRIEX_VOCABULARY_HOTFIX_README.md
@@ -0,0 +1,19 @@
+# RetrieX Vocabulary Hotfix
+
+This patch fixes a runtime error introduced by the vocabulary centralization patch.
+
+## Fixed error
+
+`array_key_exists(): Argument #2 ($array) must be of type array, App\Config\DomainVocabularyConfig given`
+
+## Root cause
+
+`NdjsonHybridRetrieverConfig::raw()` still checked `$this->vocabulary` as if it were an array. After the vocabulary refactor, `$this->vocabulary` is a `DomainVocabularyConfig` object. Effective vocabulary fallback is already resolved before `raw()` is called, so this second `array_key_exists()` check was invalid and unnecessary.
+
+## Changed file
+
+- `src/Config/NdjsonHybridRetrieverConfig.php`
+
+## After applying
+
+Clear Symfony cache before testing.