🩹 BUGFIX] - Undefined array key - check whether the array key $parent…

…Class exists or not
FriendsOfTYPO3 · Mar 17, 2023 · fbbaa84 · fbbaa84
1 parent b9b7bc4
commit fbbaa84
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/Classes/Domain/Model/Extension.php b/Classes/Domain/Model/Extension.php
@@ -292,7 +292,8 @@ public function getClassHierarchy(): ?array
                 if (strpos($parentClass, '\\') === 0) {
                     $parentClass = substr($parentClass, 1);
                 }
-                if (!is_array($classHierarchy[$parentClass])) {
+                // Check whether the array key exists
+                if (!isset($classHierarchy[$parentClass]) || !is_array($classHierarchy[$parentClass])) {
                     $classHierarchy[$parentClass] = [];
                 }
                 $classHierarchy[$parentClass][] = $domainObject;