how to build the shopify private app with custom shiping rate

[ErSanjay]

Hi, community!

I build the Shopify private app but did not get the shipping rate on the checkout page.

I did the all setup from this https://endertech.com/blog/building-a-shopify-carrier-service-app article anyone who can help was really appreciate 

[ErSanjay]

 @Zworthkey   i hope you can help on this task