Missing fields error

Scenario -
I am using FluentD->ElasticSearch->kibana setup.
In fluentD configuration file some of the fields are getting created which are getting added in ElasticSearch. Also in Kibana we have many scripted fields.

Using Knapsack plugin I am exporting Kibana visualization objects, indexes and scripted fields.
This export file I have imported in other FluenD->Kibana->ElasticSearch setup (This is fresh setup and no data present here).

After export I am getting missing fields error. How to initialize data?