Warning in error message casting (when numeric value present) - Fixed

Author: tareqtms

lib/ShopifyResource.php

@@ -446,7 +446,7 @@ protected function wrapData($dataArray, $dataKey = null)
      */
     protected function castString($array)
     {
-        if (is_string($array)) return $array;
+        if ( ! is_array($array)) return (string) $array;
 
         $string = '';
         $i = 0;