fix

lib/GA.php

@@ -406,7 +406,7 @@ class GA{
         $result=$this->getResults($reports);
          return $result;
     }
-    public function productInfo($productName,$store,$start_at,$end_at){
+    public function productInfo($productName,$dp,$start_at,$end_at){
         $analytics=self::getInstance($dp);
         $dimensionArr=[
             'productName'=>'ga:productName',