我有一个textfile格式的数据集，我试图用case类创建一个dataframe，但是我得到了下面提到的内容error:-
线程“main”java.lang.illegalargumentexception中出现异常：要求失败：列数不匹配。旧列名（1）：值新列名（4）：名称、年龄、部门、薪资
这是我的前三行dataset:-

Name,Age,Department,Salary
 Sohom,30,TD,9000000
 Aminul,32,AC,10000000

我使用的代码是below:-

import org.apache.log4j.Logger
import org.apache.log4j.Level
import org.apache.spark.sql.SparkSession
case class Record(Name: String, Age :Int, Department: String, Salary: Int)
object airportDetails {

    def main(args: Array[String]): Unit = {
    val spark = SparkSession.builder().appName("Spark SQL val basic example").config("spark.master", "local").getOrCreate()
    spark.sparkContext.setLogLevel("OFF")
    Logger.getLogger("org").setLevel(Level.OFF)
    Logger.getLogger("akka").setLevel(Level.OFF)
    import spark.implicits._

    val input = spark.sparkContext.textFile("file:///C:/Users/USER/Desktop/SparkDocuments/airport_dataset.txt")
      .map(line => line.split(",").map(x => Record(x(0).toString,x(1).toInt,x(2).toString,x(3).toInt)))
    val input1 = input.toDF("Name", "Age", "Department", "Salary")

    input1.show()

    }
}