I have working demo for new checkout.js. It was working fine but today in that demo suddenly happened 400(bad request) error. It throws 400 error when calling shipping callback I am using the same code provided in https://developer.paypal.com/docs/checkout/integration-features/shipping-callback/ link In that it is calling Order Update (Patch request) API V2. and Error is INVALID_REQUEST in the response. While I double checked that request I sent is in proper format. So for now I have one hope if PayPal is changing something or having bug in sandbox again ? Here is my code : https://www.codepile.net/pile/5K7olXKA
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