Gatling Load test Error : 406 not acceptable on Response - load-testing

Question

I am new to the gatling load test. And i want to load test my simple project.But I got the error on response(406 not acceptable) and my gatling code is below
import io.gatling.core.Predef._
import io.gatling.http.Predef._
class simu extends Simulation {
val httpConf = http
.baseURL("http://172.24.15.225:10050/sample")
.header(HttpHeaderNames.Accept, HttpHeaderValues.ApplicationJson)
.acceptHeader("application/json, text/plain, */*")
.acceptEncodingHeader("gzip, deflate")
.acceptLanguageHeader("en-US,en;q=0.5")
val scn = scenario("Scenario Name")
.exec(
http("request_1")
.post("http://172.24.15.225:10050/sample")
.header(HttpHeaderNames.Accept, HttpHeaderValues.ApplicationJson)
//.check(status.is(406))
.body(StringBody("""{ "inputData": "Wonderful" }""")).asJSON
)
setUp(scn.inject(atOnceUsers(30)).protocols(httpConf))
}
And the response for the above is
failed in Response
Errors ------------------------------------------------------------
status.find.in(200,304,201,202,203,204,205,206,207,208,209),
but actually found 406
someone please correct my code.
But the RestAPI(postman) returns response correctly.

Answer 1

finally i found an answer. There is no error in the gatling load test. But the problem is my backend coding. I have changed my response from String type into the JSON format like below
object ServiceJsonProtocol extends DefaultJsonProtocol {
implicit val RequestProtocol : RootJsonFormat[Text] = jsonFormat1(Text)//request json format
implicit val ResponseProtocol : RootJsonFormat[SampleText] = jsonFormat1(SampleText) // response json format
}
It works fine