diff --git a/src/Migration/MigrationManager.php b/src/Migration/MigrationManager.php
index 48f6b09dcb4702655879a9a82bcfd46fccc5aaa8..a042cfa2fb404ed71c42e6bfc76dec0fe8a4ad36 100644
--- a/src/Migration/MigrationManager.php
+++ b/src/Migration/MigrationManager.php
@@ -234,7 +234,7 @@ class MigrationManager
     {
         $migrationDir = $this->getMigrationDir();
 
-        if (!is_dir($migrationDir)) return;
+        if (!is_dir($migrationDir ?? '')) return;
         $files = scandir($migrationDir);
         sort($files);