diff --git a/.gitignore b/.gitignore
index 50dc90d..ebe3431 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,4 @@
-/node_modules/*
+node_modules/*
 .DS_Store
 /vendor
 /composer.lock
@@ -10,3 +10,5 @@ resources/views/draft/*
 # exception to the rule
 !resources/views/draft/.gitkeep
 !resources/views/templates/.gitkeep
+
+docs/node_modules
diff --git a/changelog.md b/changelog.md
index 71afdcc..2a27402 100644
--- a/changelog.md
+++ b/changelog.md
@@ -265,3 +265,9 @@ New Structure:
 
 ### Fixes
 - Fixes an issue where in some cases Faker data would cause a issue for the javascript frontend. See #187 and #188 
+
+## Version 4.0.0
+
+### Changed
+
+Laravel 9 Support
diff --git a/src/MailEclipse.php b/src/MailEclipse.php
index 0a906ae..9c0ccd1 100644
--- a/src/MailEclipse.php
+++ b/src/MailEclipse.php
@@ -29,7 +29,7 @@ class MailEclipse
 {
     public const VIEW_NAMESPACE = 'maileclipse';
 
-    public const VERSION = '3.5.0';
+    public const VERSION = '4.0.1';
 
     /**
      * Default type examples for being passed to reflected classes.
@@ -934,7 +934,9 @@ private static function resolveFactory($eloquentFactory, $model): ?object
             return $model::factory()->make();
         }
 
-        return null;
+        $action = sprintf('php artisan make:factory %sFactory --model=%s', Str::of($model)->afterLast('\\'), $model);
+
+        throw new \Exception("No Factory found, maileclipse.factory config is true. But there is no Factory. Create using $action");
     }
 
     /**