Images not updating in Live Store

[shopicorn]

Hi I am creating a custom app on shopify.

The app is working fine on development test store - I am able to update the product images in test stores. 

But when I am trying to install the custom app in live store, images are not updating.

{"errors":{"image":"Required parameter missing or invalid"}}

This error only come when I am updating the images from a live store.

Please help my guys. 

Thanks