"message" field is empty in error response Spring Boot

I have handled unauthorized exception like this

@ResponseStatus(value= HttpStatus.UNAUTHORIZED)
public class UnauthorizedException extends RuntimeException {
public UnauthorizedException(String message) {
super(message);
}
}

but when I throw the error as follows

throw new UnauthorizedException("Invalid credentials");

I get the error message empty in the response as follows

{
"timestamp": "2020-05-27T13:44:58.032+00:00",
"status": 401,
"error": "Unauthorized",
"message": "",
"path": "/auth/register"
}

I tried using,

throw new ResponseStatusException(HttpStatus.UNAUTHORIZED, "Invalid credentials");
but the result is still the same. When I added *spring-boot-devtools* dependency, I get the message as expected with the stack trace as well. How can I fix this?

Spring version : 2.3.0
Java Version: 11.0

Ok got it, they have changed the default value for server.error.include-message to "never" (see the comment section here: [Spring 2.3.0 Release Info][1]

All the default values are listed here:
[Spring Boot Reference Documentation][2]

Just configure your application.yaml (or properties) like this.

server:
error:
include-message: always
include-binding-errors: always

Mind that showing error messages may leak information about your server implementation.


[1]:

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[2]:

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