fix: check possible undefined method

src/QUI/ERP/Accounting/Article.php

@@ -14,6 +14,7 @@
 use function floatval;
 use function get_called_class;
 use function is_array;
+use function method_exists;
 
 /**
  * Class Article
@@ -348,7 +349,7 @@ public function getImage(): ?QUI\Projects\Media\Image
             QUI\System\Log::writeDebugException($Exception);
         }
 
-        if (!empty($Product)) {
+        if (!empty($Product) && method_exists($Product, 'getImage')) {
             try {
                 return $Product->getImage();
             } catch (QUI\Exception) {