Java NoTouchElementException:未找到行。？

一般来说，我对Java和计算机科学都是新手，我经常从以下代码中得到相同的错误：

Exception in thread "main" java.util.NoSuchElementException: No line found
    at java.base/java.util.Scanner.nextLine(Scanner.java:1651)
    at Trivedi_Chatbot.main(Trivedi_Chatbot.java:28)

如果可以的话，请帮助我

import java.util.Scanner;
import java.util.Date;

public class Trivedi_Chatbot
{
    public static void main(String[] args) 
    {
        Scanner scan = new Scanner(System.in);
        System.out.println("Hi there! My name is Alexa Jr!");
        
        String input = scan.nextLine();
        
        while(!input.equalsIgnoreCase("Goodbye"))
        {
            
            if ((input.equalsIgnoreCase("What's up?")) || (input.equalsIgnoreCase("Whats up")))
            {               
                System.out.println ("Roof or sky, depending on if you're in a building.");
            }
            
            else if (input.equalsIgnoreCase("What's the date?")){
                Date d = new Date();
                System.out.println("Today's date is " + d); 
            }
            input = scan.nextLine();
        }
        
        System.out.println("Goodbye! See you soon!");
    }
}

---

您需要在cmd或ide（如eclipse或netbeans）中运行应用程序
cmd上的示例：

---

这是您的程序在终端上运行的记录：

$ ls
Trivedi_Chatbot.class
$ java Trivedi_Chatbot
Hi there! My name is Alexa Jr!
whats up
Roof or sky, depending on if you're in a building.
goodbye
Goodbye! See you soon!
$ java Trivedi_Chatbot </dev/null
Hi there! My name is Alexa Jr!
Exception in thread "main" java.util.NoSuchElementException: No line found
    at java.base/java.util.Scanner.nextLine(Scanner.java:1651)
    at Trivedi_Chatbot.main(Trivedi_Chatbot.java:13)

$ls
Trivedi_Chatbot.class
$java Trivedi_Chatbot
你好！我的名字叫小Alexa！
怎么了
屋顶或天空，取决于您是否在建筑物中。
再见
再见！期待很快与您见面！
$java Trivedi_Chatbot适用于我，你如何运行你的程序？你如何运行我的程序？我正在使用一个基于chrome浏览器的名为Sololearn的编译器。