diff --git a/administrator/components/com_installer/tmpl/install/default.php b/administrator/components/com_installer/tmpl/install/default.php
index c265c2f553c64..cf480503879e2 100644
--- a/administrator/components/com_installer/tmpl/install/default.php
+++ b/administrator/components/com_installer/tmpl/install/default.php
@@ -20,9 +20,6 @@
Text::script('NOTICE');
Text::script('MESSAGE');
-Text::script('PLG_INSTALLER_PACKAGEINSTALLER_NO_PACKAGE');
-Text::script('PLG_INSTALLER_FOLDERINSTALLER_NO_INSTALL_PATH');
-Text::script('PLG_INSTALLER_URLINSTALLER_NO_URL');
Text::script('COM_INSTALLER_MSG_INSTALL_ENTER_A_URL');
/** @var Joomla\CMS\WebAsset\WebAssetManager $wa */
@@ -31,9 +28,10 @@
->usePreset('com_installer.installer')
->useScript('webcomponent.core-loader');
-$app = Factory::getApplication();
-?>
+$app = Factory::getApplication();
+$tabs = $app->triggerEvent('onInstallerAddInstallationTab', []);
+?>
diff --git a/plugins/installer/urlinstaller/urlinstaller.php b/plugins/installer/urlinstaller/urlinstaller.php
index 80d1f9234875d..665111170c3a3 100644
--- a/plugins/installer/urlinstaller/urlinstaller.php
+++ b/plugins/installer/urlinstaller/urlinstaller.php
@@ -20,12 +20,12 @@
class PlgInstallerUrlInstaller extends CMSPlugin
{
/**
- * Load the language file on instantiation.
+ * Application object.
*
- * @var boolean
- * @since 3.6.0
+ * @var \Joomla\CMS\Application\CMSApplication
+ * @since __DEPLOY_VERSION__
*/
- protected $autoloadLanguage = true;
+ protected $app;
/**
* Textfield or Form of the Plugin.
@@ -36,6 +36,9 @@ class PlgInstallerUrlInstaller extends CMSPlugin
*/
public function onInstallerAddInstallationTab()
{
+ // Load language files
+ $this->loadLanguage();
+
$tab = array();
$tab['name'] = 'url';
$tab['label'] = Text::_('PLG_INSTALLER_URLINSTALLER_TEXT');
diff --git a/plugins/installer/webinstaller/tmpl/default.php b/plugins/installer/webinstaller/tmpl/default.php
index d3bf09680aede..092cbf5ec2d60 100644
--- a/plugins/installer/webinstaller/tmpl/default.php
+++ b/plugins/installer/webinstaller/tmpl/default.php
@@ -16,24 +16,23 @@
$dir = $this->isRTL() ? ' dir="ltr"' : '';
?>
-