Tally ERP9 shuts down when I try to export a JSON

For the Assure export plugin to work correctly, you need to be on Tally ERP9 version 6.6.*

If you are on an older version of Tally ERP9, you can update to the latest version by using

Gateway of Tally > Press F12 (Configure) > T (ProductT & Features) > F6 : Update