[4] Catch, translate, and expound when GD not available.

[jgerman-bot]

New language relevant PR in upstream repo: joomla/joomla-cms#33055 Here are the upstream changes:

Click to expand the diff!

diff --git a/administrator/components/com_templates/src/View/Template/HtmlView.php b/administrator/components/com_templates/src/View/Template/HtmlView.php
index f0b21dca56f24..e3a0e7bf7b436 100644
--- a/administrator/components/com_templates/src/View/Template/HtmlView.php
+++ b/administrator/components/com_templates/src/View/Template/HtmlView.php
@@ -173,8 +173,16 @@ public function display($tpl = null)
 		}
 		elseif (in_array($ext, $imageTypes))
 		{
-			$this->image = $this->get('Image');
-			$this->type  = 'image';
+			try
+			{
+				$this->image = $this->get('Image');
+				$this->type  = 'image';
+			}
+			catch (\RuntimeException $exception)
+			{
+				$app->enqueueMessage(Text::_('COM_TEMPLATES_GD_EXTENSION_NOT_AVAILALE'));
+				$this->type = 'home';
+			}
 		}
 		elseif (in_array($ext, $fontTypes))
 		{
diff --git a/administrator/language/en-GB/com_templates.ini b/administrator/language/en-GB/com_templates.ini
index 47cff0d49119f..32f2d97138308 100644
--- a/administrator/language/en-GB/com_templates.ini
+++ b/administrator/language/en-GB/com_templates.ini
@@ -125,6 +125,7 @@ COM_TEMPLATES_FOLDER_NAME="Folder Name"
 COM_TEMPLATES_FOLDER_NOT_EXISTS="The folder does not exist."
 COM_TEMPLATES_FTP_DESC="For updating the template source files, Joomla will most likely need your FTP account details. Please enter them in the form fields below."
 COM_TEMPLATES_FTP_TITLE="FTP Login Details"
+COM_TEMPLATES_GD_EXTENSION_NOT_AVAILALE="The GD extension for PHP is not available.<br>In order to manipulate images you need additional extensions installed on your server. See the <a href='https://downloads.joomla.org/technical-requirements'>Official Technical Requirements</a> documentation for more details."
 COM_TEMPLATES_GRID_UNSET_LANGUAGE="Unset %s Default"
 COM_TEMPLATES_HEADING_ASSIGNED="Assigned"
 COM_TEMPLATES_HEADING_DEFAULT="Default"

[max123kl]

mit PR #1831 erledigt