InvalidSyntax error on executing this project

[KushagraBindal]

While trying to execute the project using below query

{
book(id: "123") {
title
authors
publisher
}
}

I am getting below error.

{
"data": null,
"errors": [
{
"message": "Invalid Syntax",
"locations": [
{
"line": 1,
"column": 1,
"sourceName": null
}
],
"errorType": "InvalidSyntax",
"path": null,
"extensions": null
}
],
"dataPresent": false,
"extensions": null
}

On server side I am getting below error

2021-05-12 18:11:10.346 WARN 16964 --- [o-auto-1-exec-5] graphql.GraphQL : Query failed to parse : '{"operationName":null,"variables":{},"query":"{\n book(id: "123") {\n title\n authors\n publisher\n }\n}\n"}'

Please help in understanding the root cause of this problem and how to fix the same.

[KushagraBindal]

@MovingToWeb can you please help here... Just to highlight that I am using java 1.8 in my case and this shouldn't be the problem as my application compiled and code is in running state.

I have observed one more thing, when I am running through POSTMAN(Chrome/Window) it is working with contentType application/json but when trying with Postman as Graphql it is throwing above error. I am getting in playground as well.

[midhunhk]

Make sure to select the following in the body of the Request in Postman.

Type: Raw, and select "text" from the dropdown