无法解析foreach的符号

import java.util._
import org.apache.kafka.clients.consumer._
import org.apache.kafka.common.serialization.Deserializer

object ConsumerExample {

  def main(args: Array[String]): Unit = {

    val T_Name = "CarSensor"
    val T_Group_Name = "CarSensorGroup"
    val props = new Properties()

    props.put("bootstrap.servers", "localhost:9092,localhost:9093,localhost:9094")
    props.put("group.id",T_Group_Name)
    props.put("key.deserializer", "org.apache.kafka.common.serialization.StringDeserializer")
    props.put("value.deserializer", "org.apache.kafka.common.serialization.StringDeserializer")

    val Kafka_Consumer=new KafkaConsumer[String,String](props)
    Kafka_Consumer.subscribe (Arrays.asList(T_Name))
    while(true)
    {
      val Consumer_Record=Kafka_Consumer.poll(100) //ConsumerRecords Object
      //  val RecordList=Consumer_Record.toString
      for( i <- Consumer_Record)
      { //**This place is where Cannot resolve symbol for Foreach issue shows up for <- symbol.**
        println("Supplier id = "+String.valueOf(i.value().getID())+ "Supplier name = " +i.value().getID())
      }
    }
  }
}

在它起作用之前，我已经在许多例子中使用了<-symbol。我认为这是intelliji的问题，于是重新启动了它。这是一个问题，在对象得到铸造不同的类型，我想。