diff --git a/meta/definitions/template.php b/meta/definitions/template.php
index 95d3d81..ea13690 100644
--- a/meta/definitions/template.php
+++ b/meta/definitions/template.php
@@ -7,6 +7,7 @@ use Laminas\Diactoros\Response\HtmlResponse;
 use Picea\{ Picea, Caching\Cache, Caching\Opcache, Compiler, Compiler\Context, Compiler\BaseContext, FileFetcher, Language\DefaultRegistrations, Method\Request };
 use Picea\Extension\{ LanguageHandler, LanguageExtension, TitleExtension, NumberExtension, UrlExtension };
 use Picea\Ui\{ Method, Ui };
+use Picea\Asset\Asset;
 
 return [
     Picea::class => function($c) {
@@ -33,6 +34,11 @@ return [
             {
                 parent::registerAll($compiler);
                 ( new Ui() )->registerFormExtension($compiler);
+
+                if ( class_exists('Picea\\Asset\\Asset') ) {
+                    ( new Asset() )->registerExtension($compiler);
+
+                }
             }
 
         });
diff --git a/skeleton/lean b/skeleton/lean
new file mode 100755
index 0000000..c1e8d30
--- /dev/null
+++ b/skeleton/lean
@@ -0,0 +1,9 @@
+#!/bin/php
+<?php
+
+try {
+    require_once(__DIR__."/src/Kernel.php");
+}
+catch(\Throwable $t) {
+    echo sprintf("%s [ %s ]" , $t->getMessage(),  var_export($t->getTrace(), true));
+}
\ No newline at end of file
diff --git a/src/ControllerTrait.php b/src/ControllerTrait.php
index f9179b1..21e3a77 100644
--- a/src/ControllerTrait.php
+++ b/src/ControllerTrait.php
@@ -51,7 +51,11 @@ trait ControllerTrait {
 
     public function renderRawView(string $view, ?array $variables = null) : string
     {
-        return $this->picea->renderHtml($view, $variables ?? [], $this);
+        if ( null === $content = $this->picea->renderHtml($view, $variables ?? [], $this) ) {
+            throw new \RuntimeException("Picea's renderHtml() returned NULL as result ; an error occured within your template `$view`.");
+        }
+
+        return $content;
     }
 
     public function renderView(string $view, ?array $variables = null) : ResponseInterface