fix issue

app/Http/Controllers/Api/EsgController.php

@@ -64,7 +64,7 @@ class EsgController extends Controller
             "banner" => [
                 "img_pc" => $esg->banner_pc_url,
                 "img_mobile" => $esg->banner_mobile_url,
-                "img_alt" => $esg->getTranslation("img_alt", $locate, false),
+                "img_alt" => $esg->getTranslation("banner_alt", $locate, false),
                 "text" => $esg->description ?? "",
             ],
             "paragraphs" => $this->prepareOutputContent($esg->paragraphs->toArray(), $locate)

app/Models/Esg.php

@@ -19,7 +19,7 @@ class Esg extends Model
     ];
     protected $appends = ["banner_pc_url", "banner_mobile_url"];
 
-    public $translatable = ['title', 'banner_alt', 'description', 'img_alt'];
+    public $translatable = ['title', 'banner_alt', 'description'];
 
     public function paragraphs(){
         return $this->hasMany(EsgParagraph::class)->orderBy('order');