diff --git a/_dev/src/ts/api/RequestHandler.ts b/_dev/src/ts/api/RequestHandler.ts
index 7d3701860..bfba09d4f 100644
--- a/_dev/src/ts/api/RequestHandler.ts
+++ b/_dev/src/ts/api/RequestHandler.ts
@@ -32,16 +32,25 @@ export class RequestHandler {
     data.append('dir', window.AutoUpgradeVariables.admin_dir);
 
     try {
-      const response = await baseApi.post('', data, {
+      const response = await baseApi.post<ApiResponse>('', data, {
         params: { route },
         signal
       });
 
-      const responseData = response.data as ApiResponse;
+      const responseData = response.data;
       await this.#handleResponse(responseData, fromPopState);
     } catch (error) {
-      // TODO: catch errors
-      console.error(error);
+      // A couple or errors are returned in an actual response (i.e 404 or 500)
+      if (error instanceof AxiosError) {
+        if (error.response?.data) {
+          const responseData = error.response.data;
+          responseData.new_route = 'error-page';
+          await this.#handleResponse(responseData, true);
+        }
+      } else {
+        // TODO: catch errors
+        console.error(error);
+      }
     }
   }
 
diff --git a/_dev/src/ts/pages/ErrorPage.ts b/_dev/src/ts/pages/ErrorPage.ts
new file mode 100644
index 000000000..92641e573
--- /dev/null
+++ b/_dev/src/ts/pages/ErrorPage.ts
@@ -0,0 +1,23 @@
+import DomLifecycle from '../types/DomLifecycle';
+import ErrorPage404 from './error/ErrorPage404';
+import PageAbstract from './PageAbstract';
+
+export default class ErrorPage extends PageAbstract {
+  errorPage?: DomLifecycle;
+
+  constructor() {
+    super();
+
+    if (document.getElementById('ua_error_404')) {
+      this.errorPage = new ErrorPage404();
+    }
+  }
+
+  public mount = () => {
+    this.errorPage?.mount();
+  };
+
+  public beforeDestroy = () => {
+    this.errorPage?.beforeDestroy();
+  };
+}
diff --git a/_dev/src/ts/pages/error/ErrorPage404.ts b/_dev/src/ts/pages/error/ErrorPage404.ts
new file mode 100644
index 000000000..5da372ccd
--- /dev/null
+++ b/_dev/src/ts/pages/error/ErrorPage404.ts
@@ -0,0 +1,53 @@
+import api from '../../api/RequestHandler';
+import DomLifecycle from '../../types/DomLifecycle';
+
+export default class ErrorPage404 implements DomLifecycle {
+  isOnHomePage: boolean = false;
+
+  public constructor() {
+    this.isOnHomePage = new URLSearchParams(window.location.search).get('route') === 'home-page';
+  }
+
+  public mount = () => {
+    this.#activeActionButton.classList.remove('hidden');
+    this.#form.addEventListener('submit', this.#onSubmit);
+  };
+
+  public beforeDestroy = () => {
+    this.#form.removeEventListener('submit', this.#onSubmit);
+  };
+
+  get #activeActionButton(): HTMLFormElement | HTMLAnchorElement {
+    return this.isOnHomePage ? this.#form : this.#exitButton;
+  }
+
+  get #form(): HTMLFormElement {
+    const form = document.forms.namedItem('home-page-form');
+    if (!form) {
+      throw new Error('Form not found');
+    }
+
+    ['routeToSubmit'].forEach((data) => {
+      if (!form.dataset[data]) {
+        throw new Error(`Missing data ${data} from form dataset.`);
+      }
+    });
+
+    return form;
+  }
+
+  get #exitButton(): HTMLAnchorElement {
+    const link = document.getElementById('exit-button');
+
+    if (!link || !(link instanceof HTMLAnchorElement)) {
+      throw new Error('Link is not found or invalid');
+    }
+    return link;
+  }
+
+  readonly #onSubmit = async (event: Event) => {
+    event.preventDefault();
+
+    await api.post(this.#form.dataset.routeToSubmit!, new FormData(this.#form));
+  };
+}
diff --git a/_dev/src/ts/routing/ScriptHandler.ts b/_dev/src/ts/routing/ScriptHandler.ts
index d92af31c4..78f153ad4 100644
--- a/_dev/src/ts/routing/ScriptHandler.ts
+++ b/_dev/src/ts/routing/ScriptHandler.ts
@@ -16,6 +16,7 @@ import SendErrorReportDialog from '../dialogs/SendErrorReportDialog';
 import DomLifecycle from '../types/DomLifecycle';
 import { RoutesMatching } from '../types/scriptHandlerTypes';
 import { routeHandler } from '../autoUpgrade';
+import ErrorPage from '../pages/ErrorPage';
 
 export default class ScriptHandler {
   #currentScript: DomLifecycle | undefined;
@@ -38,6 +39,8 @@ export default class ScriptHandler {
     'restore-page-restore': RestorePageRestore,
     'restore-page-post-restore': RestorePagePostRestore,
 
+    'error-page': ErrorPage,
+
     'start-update-dialog': StartUpdateDialog,
     'send-error-report-dialog': SendErrorReportDialog
   };
@@ -61,16 +64,18 @@ export default class ScriptHandler {
    * @description Loads and mounts the page script associated with the specified route name.
    */
   loadScript(scriptID: string) {
-    const classScript = this.#routesMatching[scriptID];
-    if (classScript) {
-      try {
-        this.#currentScript = new classScript();
-        this.#currentScript.mount();
-      } catch (error) {
-        console.error(`Failed to load script with ID ${scriptID}:`, error);
-      }
-    } else {
+    let classScript = this.#routesMatching[scriptID];
+    if (!classScript) {
       console.debug(`No matching class found for ID: ${scriptID}`);
+      // Each route must provide a script to load. If it does not exist, we load the error management script
+      classScript = this.#routesMatching['error-page'];
+    }
+
+    try {
+      this.#currentScript = new classScript();
+      this.#currentScript.mount();
+    } catch (error) {
+      console.error(`Failed to load script with ID ${scriptID}:`, error);
     }
   }
 
diff --git a/classes/Router/UrlGenerator.php b/classes/Router/UrlGenerator.php
new file mode 100644
index 000000000..9d1220cdb
--- /dev/null
+++ b/classes/Router/UrlGenerator.php
@@ -0,0 +1,74 @@
+<?php
+
+/**
+ * Copyright since 2007 PrestaShop SA and Contributors
+ * PrestaShop is an International Registered Trademark & Property of PrestaShop SA
+ *
+ * NOTICE OF LICENSE
+ *
+ * This source file is subject to the Academic Free License 3.0 (AFL-3.0)
+ * that is bundled with this package in the file LICENSE.md.
+ * It is also available through the world-wide-web at this URL:
+ * https://opensource.org/licenses/AFL-3.0
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@prestashop.com so we can send you a copy immediately.
+ *
+ * DISCLAIMER
+ *
+ * Do not edit or add to this file if you wish to upgrade PrestaShop to newer
+ * versions in the future. If you wish to customize PrestaShop for your
+ * needs please refer to https://devdocs.prestashop.com/ for more information.
+ *
+ * @author    PrestaShop SA and Contributors <contact@prestashop.com>
+ * @copyright Since 2007 PrestaShop SA and Contributors
+ * @license   https://opensource.org/licenses/AFL-3.0 Academic Free License 3.0 (AFL-3.0)
+ */
+
+namespace PrestaShop\Module\AutoUpgrade\Router;
+
+use Symfony\Component\HttpFoundation\Request;
+
+class UrlGenerator
+{
+    /** @var string */
+    private $shopBasePath;
+    /** @var string */
+    private $adminFolder;
+
+    public function __construct(string $shopBasePath, string $adminFolder)
+    {
+        $this->shopBasePath = $shopBasePath;
+        $this->adminFolder = $adminFolder;
+    }
+
+    public function getShopAbsolutePathFromRequest(Request $request): string
+    {
+        // Determine the subdirectories of the PHP entry point (the script being executed)
+        // relative to the shop root folder.
+        // This calculation helps generate a base path that correctly accounts for any subfolder in which
+        // the shop might be installed.
+        $subDirs = explode(
+            DIRECTORY_SEPARATOR,
+            trim(
+                str_replace(
+                    $this->shopBasePath,
+                    '',
+                    dirname($request->server->get('SCRIPT_FILENAME', '')
+                )
+            ), DIRECTORY_SEPARATOR)
+        );
+        $numberOfSubDirs = count($subDirs);
+
+        $path = explode('/', $request->getBasePath());
+
+        $path = array_splice($path, 0, -$numberOfSubDirs);
+
+        return implode('/', $path) ?: '/';
+    }
+
+    public function getShopAdminAbsolutePathFromRequest(Request $request): string
+    {
+        return rtrim($this->getShopAbsolutePathFromRequest($request), '/') . '/' . $this->adminFolder;
+    }
+}
diff --git a/classes/Twig/AssetsEnvironment.php b/classes/Twig/AssetsEnvironment.php
index cc8c700e1..414e521a2 100644
--- a/classes/Twig/AssetsEnvironment.php
+++ b/classes/Twig/AssetsEnvironment.php
@@ -27,18 +27,19 @@
 
 namespace PrestaShop\Module\AutoUpgrade\Twig;
 
+use PrestaShop\Module\AutoUpgrade\Router\UrlGenerator;
 use Symfony\Component\HttpFoundation\Request;
 
 class AssetsEnvironment
 {
     const DEV_BASE_URL = 'http://localhost:5173';
 
-    /** @var string */
-    private $shopBasePath;
+    /** @var UrlGenerator */
+    protected $urlGenerator;
 
-    public function __construct(string $shopBasePath)
+    public function __construct(UrlGenerator $urlGenerator)
     {
-        $this->shopBasePath = $shopBasePath;
+        $this->urlGenerator = $urlGenerator;
     }
 
     public function isDevMode(): bool
@@ -52,31 +53,6 @@ public function getAssetsBaseUrl(Request $request): string
             return self::DEV_BASE_URL;
         }
 
-        return $this->getShopUrlFromRequest($request) . '/modules/autoupgrade/views';
-    }
-
-    private function getShopUrlFromRequest(Request $request): string
-    {
-        // Determine the subdirectories of the PHP entry point (the script being executed)
-        // relative to the shop root folder.
-        // This calculation helps generate a base path that correctly accounts for any subfolder in which
-        // the shop might be installed.
-        $subDirs = explode(
-            DIRECTORY_SEPARATOR,
-            trim(
-                str_replace(
-                    $this->shopBasePath,
-                    '',
-                    dirname($request->server->get('SCRIPT_FILENAME', '')
-                )
-            ), DIRECTORY_SEPARATOR)
-        );
-        $numberOfSubDirs = count($subDirs);
-
-        $path = explode('/', $request->getBasePath());
-
-        $path = array_splice($path, 0, -$numberOfSubDirs);
-
-        return implode('/', $path);
+        return rtrim($this->urlGenerator->getShopAbsolutePathFromRequest($request), '/') . '/modules/autoupgrade/views';
     }
 }
diff --git a/classes/UpgradeContainer.php b/classes/UpgradeContainer.php
index e8d9dd62d..12ef7109e 100644
--- a/classes/UpgradeContainer.php
+++ b/classes/UpgradeContainer.php
@@ -41,6 +41,7 @@
 use PrestaShop\Module\AutoUpgrade\Parameters\UpgradeConfiguration;
 use PrestaShop\Module\AutoUpgrade\Progress\CompletionCalculator;
 use PrestaShop\Module\AutoUpgrade\Repository\LocalArchiveRepository;
+use PrestaShop\Module\AutoUpgrade\Router\UrlGenerator;
 use PrestaShop\Module\AutoUpgrade\Services\ComposerService;
 use PrestaShop\Module\AutoUpgrade\Services\DistributionApiService;
 use PrestaShop\Module\AutoUpgrade\Services\LogsService;
@@ -269,6 +270,9 @@ class UpgradeContainer
      */
     private $upgradeSelfCheck;
 
+    /** @var UrlGenerator */
+    private $urlGenerator;
+
     /**
      * @var PhpVersionResolverService
      */
@@ -943,11 +947,11 @@ public function getLocalArchiveRepository(): LocalArchiveRepository
      */
     public function getAssetsEnvironment(): AssetsEnvironment
     {
-        if (null !== $this->assetsEnvironment) {
-            return $this->assetsEnvironment;
+        if (null === $this->assetsEnvironment) {
+            $this->assetsEnvironment = new AssetsEnvironment($this->getUrlGenerator());
         }
 
-        return $this->assetsEnvironment = new AssetsEnvironment($this->getProperty(self::PS_ROOT_PATH));
+        return $this->assetsEnvironment;
     }
 
     /**
@@ -992,6 +996,21 @@ public function getPrestashopVersionService(): PrestashopVersionService
         return $this->prestashopVersionService = new PrestashopVersionService($this->getZipAction());
     }
 
+    /**
+     * @return UrlGenerator
+     */
+    public function getUrlGenerator(): UrlGenerator
+    {
+        if (null === $this->urlGenerator) {
+            $this->urlGenerator = new UrlGenerator(
+                $this->getProperty(self::PS_ROOT_PATH),
+                $this->getProperty(self::PS_ADMIN_SUBDIR),
+            );
+        }
+
+        return $this->urlGenerator;
+    }
+
     /**
      * Checks if the composer autoload exists, and loads it.
      *
diff --git a/controllers/admin/self-managed/Error404Controller.php b/controllers/admin/self-managed/Error404Controller.php
index 1791baabc..fa38fe680 100644
--- a/controllers/admin/self-managed/Error404Controller.php
+++ b/controllers/admin/self-managed/Error404Controller.php
@@ -27,11 +27,29 @@
 
 namespace PrestaShop\Module\AutoUpgrade\Controller;
 
+use PrestaShop\Module\AutoUpgrade\Router\Routes;
+use Symfony\Component\HttpFoundation\Response;
+
 class Error404Controller extends AbstractPageController
 {
+    const ERROR_CODE = 404;
+
+    public function index()
+    {
+        $response = parent::index();
+
+        if ($response instanceof Response) {
+            $response->setStatusCode(self::ERROR_CODE);
+        } else {
+            http_response_code(self::ERROR_CODE);
+        }
+
+        return $response;
+    }
+
     protected function getPageTemplate(): string
     {
-        return 'errors/404';
+        return 'errors/' . self::ERROR_CODE;
     }
 
     protected function getParams(): array
@@ -39,6 +57,11 @@ protected function getParams(): array
         return [
             // TODO: assets_base_path is provided by all controllers. What about a asset() twig function instead?
             'assets_base_path' => $this->upgradeContainer->getAssetsEnvironment()->getAssetsBaseUrl($this->request),
+
+            'error_code' => self::ERROR_CODE,
+
+            'exit_to_shop_admin' => $this->upgradeContainer->getUrlGenerator()->getShopAdminAbsolutePathFromRequest($this->request),
+            'exit_to_app_home' => Routes::HOME_PAGE,
         ];
     }
 }
diff --git a/tests/unit/Router/UrlGeneratorTest.php b/tests/unit/Router/UrlGeneratorTest.php
new file mode 100644
index 000000000..9752a763a
--- /dev/null
+++ b/tests/unit/Router/UrlGeneratorTest.php
@@ -0,0 +1,117 @@
+<?php
+/**
+ * Copyright since 2007 PrestaShop SA and Contributors
+ * PrestaShop is an International Registered Trademark & Property of PrestaShop SA
+ *
+ * NOTICE OF LICENSE
+ *
+ * This source file is subject to the Academic Free License 3.0 (AFL-3.0)
+ * that is bundled with this package in the file LICENSE.md.
+ * It is also available through the world-wide-web at this URL:
+ * https://opensource.org/licenses/AFL-3.0
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@prestashop.com so we can send you a copy immediately.
+ *
+ * DISCLAIMER
+ *
+ * Do not edit or add to this file if you wish to upgrade PrestaShop to newer
+ * versions in the future. If you wish to customize PrestaShop for your
+ * needs please refer to https://devdocs.prestashop.com/ for more information.
+ *
+ * @author    PrestaShop SA and Contributors <contact@prestashop.com>
+ * @copyright Since 2007 PrestaShop SA and Contributors
+ * @license   https://opensource.org/licenses/AFL-3.0 Academic Free License 3.0 (AFL-3.0)
+ */
+use PHPUnit\Framework\TestCase;
+use PrestaShop\Module\AutoUpgrade\Router\UrlGenerator;
+use Symfony\Component\HttpFoundation\Request;
+
+class UrlGeneratorTest extends TestCase
+{
+    /** @var UrlGenerator */
+    private $urlGenerator;
+
+    protected function setUp()
+    {
+        $shopBasePath = '/yo/doge';
+        $adminPath = 'wololo';
+        $this->urlGenerator = new UrlGenerator($shopBasePath, $adminPath);
+    }
+
+    public function testGetShopUrlReturnsUrl()
+    {
+        $server = [
+            'HTTP_HOST' => 'localhost',
+            'SERVER_PORT' => '80',
+            'QUERY_STRING' => '',
+            'PHP_SELF' => '/admin-wololo/index.php',
+            'SCRIPT_FILENAME' => '/yo/doge/admin-wololo/index.php',
+            'REQUEST_URI' => 'index.php',
+        ];
+
+        $request = new Request([], [], [], [], [], $server);
+
+        $expectedAbsoluteUrlPathToShop = '/';
+        $expectedAbsoluteUrlPathToAdmin = '/wololo';
+        $this->assertSame($expectedAbsoluteUrlPathToShop, $this->urlGenerator->getShopAbsolutePathFromRequest($request));
+        $this->assertSame($expectedAbsoluteUrlPathToAdmin, $this->urlGenerator->getShopAdminAbsolutePathFromRequest($request));
+    }
+
+    public function testGetShopUrlReturnsUrlWithShopInSubFolder()
+    {
+        $server = [
+            'HTTP_HOST' => 'localhost',
+            'SERVER_PORT' => '80',
+            'QUERY_STRING' => '',
+            'PHP_SELF' => '/hello-world/admin-wololo/index.php',
+            'SCRIPT_FILENAME' => '/yo/doge/admin-wololo/index.php',
+            'REQUEST_URI' => 'hello-world/index.php',
+        ];
+
+        $request = new Request([], [], [], [], [], $server);
+
+        $expectedAbsoluteUrlPathToShop = '/hello-world';
+        $expectedAbsoluteUrlPathToAdmin = '/hello-world/wololo';
+        $this->assertSame($expectedAbsoluteUrlPathToShop, $this->urlGenerator->getShopAbsolutePathFromRequest($request));
+        $this->assertSame($expectedAbsoluteUrlPathToAdmin, $this->urlGenerator->getShopAdminAbsolutePathFromRequest($request));
+    }
+
+    public function testGetShopUrlReturnsUrlWithCustomEntrypoint()
+    {
+        $server = [
+            'HTTP_HOST' => 'localhost',
+            'SERVER_PORT' => '80',
+            'QUERY_STRING' => '',
+            'PHP_SELF' => '/admin-wololo/autoupgrade/ajax-upgradetab.php',
+            'SCRIPT_FILENAME' => '/yo/doge/admin-wololo/autoupgrade/ajax-upgradetab.php',
+            'REQUEST_URI' => '/admin-wololo/autoupgrade/ajax-upgradetab.php?route=update-step-backup-submit',
+        ];
+
+        $request = new Request([], [], [], [], [], $server);
+
+        $expectedAbsoluteUrlPathToShop = '/';
+        $expectedAbsoluteUrlPathToAdmin = '/wololo';
+        $this->assertSame($expectedAbsoluteUrlPathToShop, $this->urlGenerator->getShopAbsolutePathFromRequest($request));
+        $this->assertSame($expectedAbsoluteUrlPathToAdmin, $this->urlGenerator->getShopAdminAbsolutePathFromRequest($request));
+    }
+
+    public function testGetShopUrlReturnsUrlWithShopInSubFolderAndParams()
+    {
+        $server = [
+            'HTTP_HOST' => 'localhost',
+            'SERVER_PORT' => '80',
+            'QUERY_STRING' => '',
+            'PHP_SELF' => '/hello-world/admin-wololo/index.php',
+            'SCRIPT_FILENAME' => '/yo/doge/admin-wololo/index.php',
+            'REQUEST_URI' => 'hello-world/admin-wololo/index.php?controller=AdminSelfUpgrade',
+        ];
+
+        $request = new Request([], [], [], [], [], $server);
+
+        $expectedAbsoluteUrlPathToShop = '/hello-world';
+        $expectedAbsoluteUrlPathToAdmin = '/hello-world/wololo';
+        $this->assertSame($expectedAbsoluteUrlPathToShop, $this->urlGenerator->getShopAbsolutePathFromRequest($request));
+        $this->assertSame($expectedAbsoluteUrlPathToAdmin, $this->urlGenerator->getShopAdminAbsolutePathFromRequest($request));
+    }
+}
diff --git a/tests/unit/Twig/AssetsEnvironmentTest.php b/tests/unit/Twig/AssetsEnvironmentTest.php
index 37c7b42ae..8217b9937 100644
--- a/tests/unit/Twig/AssetsEnvironmentTest.php
+++ b/tests/unit/Twig/AssetsEnvironmentTest.php
@@ -24,6 +24,7 @@
  * @license   https://opensource.org/licenses/AFL-3.0 Academic Free License 3.0 (AFL-3.0)
  */
 use PHPUnit\Framework\TestCase;
+use PrestaShop\Module\AutoUpgrade\Router\UrlGenerator;
 use PrestaShop\Module\AutoUpgrade\Twig\AssetsEnvironment;
 use Symfony\Component\HttpFoundation\Request;
 
@@ -34,7 +35,8 @@ class AssetsEnvironmentTest extends TestCase
     protected function setUp()
     {
         $shopBasePath = '/yo/doge';
-        $this->assetsEnvironment = new AssetsEnvironment($shopBasePath);
+        $adminPath = 'wololo';
+        $this->assetsEnvironment = new AssetsEnvironment(new UrlGenerator($shopBasePath, $adminPath));
     }
 
     protected function tearDown()
@@ -72,7 +74,7 @@ public function testGetAssetsBaseUrlReturnsDevUrlInDevMode()
 
     public function testGetAssetsBaseUrlReturnsProductionUrl()
     {
-        $expectedUrl = '/modules/autoupgrade/views';
+        $expectedAbsoluteUrlPathToShop = '/modules/autoupgrade/views';
         $server = [
             'HTTP_HOST' => 'localhost',
             'SERVER_PORT' => '80',
@@ -84,7 +86,7 @@ public function testGetAssetsBaseUrlReturnsProductionUrl()
 
         $request = new Request([], [], [], [], [], $server);
 
-        $this->assertSame($expectedUrl, $this->assetsEnvironment->getAssetsBaseUrl($request));
+        $this->assertSame($expectedAbsoluteUrlPathToShop, $this->assetsEnvironment->getAssetsBaseUrl($request));
     }
 
     public function testGetAssetsBaseUrlReturnsProductionUrlWithShopInSubFolder()
@@ -100,8 +102,8 @@ public function testGetAssetsBaseUrlReturnsProductionUrlWithShopInSubFolder()
 
         $request = new Request([], [], [], [], [], $server);
 
-        $expectedUrl = '/hello-world/modules/autoupgrade/views';
-        $this->assertSame($expectedUrl, $this->assetsEnvironment->getAssetsBaseUrl($request));
+        $expectedAbsoluteUrlPathToShop = '/hello-world/modules/autoupgrade/views';
+        $this->assertSame($expectedAbsoluteUrlPathToShop, $this->assetsEnvironment->getAssetsBaseUrl($request));
     }
 
     public function testGetAssetsBaseUrlReturnsProductionUrlWithCustomEntrypoint()
@@ -117,8 +119,8 @@ public function testGetAssetsBaseUrlReturnsProductionUrlWithCustomEntrypoint()
 
         $request = new Request([], [], [], [], [], $server);
 
-        $expectedUrl = '/modules/autoupgrade/views';
-        $this->assertSame($expectedUrl, $this->assetsEnvironment->getAssetsBaseUrl($request));
+        $expectedAbsoluteUrlPathToShop = '/modules/autoupgrade/views';
+        $this->assertSame($expectedAbsoluteUrlPathToShop, $this->assetsEnvironment->getAssetsBaseUrl($request));
     }
 
     public function testGetAssetsBaseUrlReturnsProductionUrlWithShopInSubFolderAndParams()
@@ -134,7 +136,7 @@ public function testGetAssetsBaseUrlReturnsProductionUrlWithShopInSubFolderAndPa
 
         $request = new Request([], [], [], [], [], $server);
 
-        $expectedUrl = '/hello-world/modules/autoupgrade/views';
-        $this->assertSame($expectedUrl, $this->assetsEnvironment->getAssetsBaseUrl($request));
+        $expectedAbsoluteUrlPathToShop = '/hello-world/modules/autoupgrade/views';
+        $this->assertSame($expectedAbsoluteUrlPathToShop, $this->assetsEnvironment->getAssetsBaseUrl($request));
     }
 }
diff --git a/views/templates/layouts/error.html.twig b/views/templates/layouts/error.html.twig
index 3b0cee274..b50c90208 100644
--- a/views/templates/layouts/error.html.twig
+++ b/views/templates/layouts/error.html.twig
@@ -1,23 +1,27 @@
-<div id="error_{{ error_code }}" class="error-page">
-  <div class="error-page__container">
-    {% block img %}
-      {# Default image can go here, or it can be left empty so that children can override it #}
-    {% endblock %}
+{% extends "@ModuleAutoUpgrade/layouts/page.html.twig" %}
 
-    <div class="error-page__infos">
-      {% block title %}
-        {# Default title can go here, or it can be left empty so that children can override it #}
+{% block update_assistant %}
+  <div id="ua_error_{{ error_code }}" class="error-page">
+    <div class="error-page__container">
+      {% block img %}
+        {# Default image can go here, or it can be left empty so that children can override it #}
       {% endblock %}
 
-      {% block description %}
-        {# Default description can go here, or it can be left empty so that children can override it #}
-      {% endblock %}
+      <div class="error-page__infos">
+        {% block title %}
+          {# Default title can go here, or it can be left empty so that children can override it #}
+        {% endblock %}
 
-      <div class="error-page__buttons">
-        {% block button %}
-          {# Default button can go here, or it can be left empty so that children can override it #}
+        {% block description %}
+          {# Default description can go here, or it can be left empty so that children can override it #}
         {% endblock %}
+
+        <div class="error-page__buttons">
+          {% block button %}
+            {# Default button can go here, or it can be left empty so that children can override it #}
+          {% endblock %}
+        </div>
       </div>
     </div>
   </div>
-</div>
+{% endblock %}
diff --git a/views/templates/layouts/page.html.twig b/views/templates/layouts/page.html.twig
index 0696c09fa..f556d284c 100644
--- a/views/templates/layouts/page.html.twig
+++ b/views/templates/layouts/page.html.twig
@@ -20,6 +20,6 @@
       </div>
     {% endblock %}
   </div>
-
-  <div id="ua_dialog"></div>
 {% endblock %}
+
+<div id="ua_dialog"></div>
diff --git a/views/templates/pages/errors/404.html.twig b/views/templates/pages/errors/404.html.twig
index b07e37aa3..357345953 100644
--- a/views/templates/pages/errors/404.html.twig
+++ b/views/templates/pages/errors/404.html.twig
@@ -17,7 +17,13 @@
 {% endblock %}
 
 {% block button %}
-  <a class="error-page__button btn btn-primary btn-lg" href="#">
-    {{ 'Go back to Update assistant'|trans({}) }}
+  <form id="home-page-form" name="home-page-form" data-route-to-submit="{{ exit_to_app_home }}" class="hidden">
+    <button class="error-page__button btn btn-primary btn-lg" type="submit">
+      {{ 'Go back to Update assistant'|trans({}) }}
+    </button>
+  </form>
+
+  <a id="exit-button" class="error-page__button btn btn-primary btn-lg hidden" href="{{ exit_to_shop_admin }}">
+    {{ 'Go back to Dashboard'|trans({}) }}
   </a>
 {% endblock %}