Merge branch 'MDL-72292-master' of https://github.com/lameze/moodle

lib/classes/component.php

@@ -1203,9 +1203,13 @@ $cache = '.var_export($cache, true).';
      * and the value is the new class name.
      * It is only included when we are populating the component cache. After that is not needed.
      *
-     * @param string $fulldir
+     * @param string|null $fulldir The directory to the renamed classes.
      */
-    protected static function load_renamed_classes($fulldir) {
+    protected static function load_renamed_classes(?string $fulldir) {
+        if (is_null($fulldir)) {
+            return;
+        }
+
         $file = $fulldir . '/db/renamedclasses.php';
         if (is_readable($file)) {
             $renamedclasses = null;