I’m facing issues formatting reponses in krakenD.

1. {
   “@comment”: “Verify OTP and Sign Access Token and Refresh Token”,
   “endpoint”: “/auth/login-with-mobile/verify”,
   “method”: “POST”,
   “backend”: [
   {
   “encoding”: “no-op”,
   “url_pattern”: “/v1/auth/login-with-mobile/verify”
   }
   ],
   “extra_config”: {
   “auth/signer”: {
   “alg”: “HS256”,
   “kid”: “sim2”,
   “keys_to_sign”: [“access_token”, “refresh_token”],
   “jwk_url”: “http://mobipay-backend-service:4000/symmetric.json”,
   “disable_jwk_security”: true
   }
   }
   },

This is the configuration I’m using in krakenD to connect my nestjs backend.

Nestjs backend return this response for validation error.

{
“message”: [
“phone must be a valid phone number”,
“otp should not be empty”
],
“error”: “Bad Request”,
“statusCode”: 400
}

But for this response krakenD shows Could not get response
Error: aborted in postman.

2. if i use “auth/validator”: {
   “alg”: “HS256”,
   “roles_key”: “roles”,
   “roles”: [],
   “jwk_url”: “http://mobipay-backend-service:4000/symmetric.json”,
   “disable_jwk_security”: true
   }

config krakenD just return just a status code with empty body. How i can modify those response body?