Post request with video upload

Hi I am getting an error while uploading video. It says -
“akka.http.scaladsl.model.IllegalHeaderException: multipart/form-data part must contain Content-Disposition header with name parameter”

.exec(http("request_1") // Here's an example of a POST request
        Map("Content-Type" -> "multipart/form-data")
      .headers(Map("Content-Disposition" -> """form-data; name="file""""))
      .headers(Map("name" -> "file"))
        .header("Content-Disposition", "name")
      .queryParam("""xyz""", """true""") // Note the triple double quotes: used in Scala for protecting a whole chain of characters (no need for backslash)

Need some help over here.