diff --git a/formwork/src/Controllers/AssetsController.php b/formwork/src/Controllers/AssetsController.php
index 958f03c26..14833915f 100644
--- a/formwork/src/Controllers/AssetsController.php
+++ b/formwork/src/Controllers/AssetsController.php
@@ -3,34 +3,34 @@
 namespace Formwork\Controllers;
 
 use Formwork\Http\FileResponse;
+use Formwork\Http\Response;
 use Formwork\Router\RouteParams;
-use Formwork\Utils\Exceptions\FileNotFoundException;
 use Formwork\Utils\FileSystem;
 
 class AssetsController extends AbstractController
 {
-    public function asset(RouteParams $routeParams): FileResponse
+    public function asset(RouteParams $routeParams): Response
     {
         $path = FileSystem::joinPaths($this->config->get('system.images.processPath'), $routeParams->get('id'), $routeParams->get('name'));
 
-        if (FileSystem::isFile($path)) {
+        if (FileSystem::isFile($path, assertExists: false)) {
             return new FileResponse($path, headers: ['Cache-Control' => 'private, max-age=31536000, immutable'], autoEtag: true, autoLastModified: true);
         }
 
-        throw new FileNotFoundException('Cannot find asset');
+        return $this->forward(PageController::class, 'error');
     }
 
-    public function template(RouteParams $routeParams): FileResponse
+    public function template(RouteParams $routeParams): Response
     {
         $path = FileSystem::joinPaths($this->config->get('system.templates.path'), 'assets', $routeParams->get('file'));
 
-        if (FileSystem::isFile($path)) {
+        if (FileSystem::isFile($path, assertExists: false)) {
             $headers = $this->request->query()->has('v')
                 ? ['Cache-Control' => 'private, max-age=31536000, immutable']
                 : [];
             return new FileResponse($path, headers: $headers, autoEtag: true, autoLastModified: true);
         }
 
-        throw new FileNotFoundException('Cannot find asset');
+        return $this->forward(PageController::class, 'error');
     }
 }
diff --git a/formwork/src/Controllers/PageController.php b/formwork/src/Controllers/PageController.php
index 777ba7fa9..3f35bc62f 100644
--- a/formwork/src/Controllers/PageController.php
+++ b/formwork/src/Controllers/PageController.php
@@ -97,6 +97,11 @@ public function load(RouteParams $routeParams, Statistics $statistics): Response
         return $this->getPageResponse($this->site->errorPage());
     }
 
+    public function error(): Response
+    {
+        return $this->getPageResponse($this->site->errorPage());
+    }
+
     protected function getPageResponse(Page $page): Response
     {
         if ($this->site->currentPage() === null) {
diff --git a/formwork/src/Panel/Controllers/AssetsController.php b/formwork/src/Panel/Controllers/AssetsController.php
index 32d4f5860..59434e632 100644
--- a/formwork/src/Panel/Controllers/AssetsController.php
+++ b/formwork/src/Panel/Controllers/AssetsController.php
@@ -3,23 +3,23 @@
 namespace Formwork\Panel\Controllers;
 
 use Formwork\Http\FileResponse;
+use Formwork\Http\Response;
 use Formwork\Router\RouteParams;
-use Formwork\Utils\Exceptions\FileNotFoundException;
 use Formwork\Utils\FileSystem;
 
 class AssetsController extends AbstractController
 {
-    public function asset(RouteParams $routeParams): FileResponse
+    public function asset(RouteParams $routeParams): Response
     {
         $path = FileSystem::joinPaths($this->config->get('system.panel.paths.assets'), $routeParams->get('type'), $routeParams->get('file'));
 
-        if (FileSystem::isFile($path)) {
+        if (FileSystem::isFile($path, assertExists: false)) {
             $headers = ($this->request->query()->has('v') || $routeParams->get('type') === 'icons')
                 ? ['Cache-Control' => 'private, max-age=31536000, immutable']
                 : [];
             return new FileResponse($path, headers: $headers, autoEtag: true, autoLastModified: true);
         }
 
-        throw new FileNotFoundException('Cannot find asset');
+        return $this->forward(ErrorsController::class, 'notFound');
     }
 }
diff --git a/formwork/src/Panel/Controllers/UsersController.php b/formwork/src/Panel/Controllers/UsersController.php
index dbb536d25..ce368b4a2 100644
--- a/formwork/src/Panel/Controllers/UsersController.php
+++ b/formwork/src/Panel/Controllers/UsersController.php
@@ -17,7 +17,6 @@
 use Formwork\Router\RouteParams;
 use Formwork\Users\User;
 use Formwork\Utils\Arr;
-use Formwork\Utils\Exceptions\FileNotFoundException;
 use Formwork\Utils\FileSystem;
 
 class UsersController extends AbstractController
@@ -217,11 +216,11 @@ public function images(RouteParams $routeParams): Response
     {
         $path = FileSystem::joinPaths($this->config->get('system.users.paths.images'), $routeParams->get('image'));
 
-        if (FileSystem::isFile($path)) {
+        if (FileSystem::isFile($path, assertExists: false)) {
             return new FileResponse($path, headers: ['Cache-Control' => 'private, max-age=31536000, immutable'], autoEtag: true, autoLastModified: true);
         }
 
-        throw new FileNotFoundException('Cannot find asset');
+        return $this->forward(ErrorsController::class, 'notFound');
     }
 
     /**