Patch-Amasty_ShopbyBrand-2.6.x-missing-option-error-fix.patch

--- Plugin/Catalog/Block/Product/View/BlockHtmlTitlePlugin.php	2018-10-31 17:09:20.300416369 +0300
+++ Plugin/Catalog/Block/Product/View/BlockHtmlTitlePlugin.php	2018-10-31 17:09:30.244433580 +0300
@@ -72,7 +72,13 @@
      */
     protected function getOptionSettingUrl(OptionSetting $setting)
     {
-        return $this->brandHelper->getBrandUrl($setting->getAttributeOption());
+        $url = '';
+        $option = $setting->getAttributeOption();
+        if ($option) {
+            $url = $this->brandHelper->getBrandUrl($option);
+        }
+
+        return $url;
     }
 
     /**