print to find bug

models/peer/peer_cache.go

@@ -125,13 +125,13 @@ func (p *PeerCache) exec(url string, method tools.METHOD, body map[string]interf
 	}
 	var m map[string]interface{}
 	json.Unmarshal(b, &m)
-	fmt.Println("response", err)
 	if err != nil {
+		fmt.Println("response", err)
 		return err
 	}
 
 	if e, ok := m["error"]; !ok && e != "" { // Check if there is an error in the response
 		return errors.New(fmt.Sprintf("%v", m["error"]))
 	}
-	return err
+	return nil
 }