Exception in thread "main" java.util.InputMismatchException error

I believe I wrote all my code correctly but I'm getting this error. Can someone help me understand?

Exception in thread "main" java.util.InputMismatchExceptionat java.base/java.util.Scanner.throwFor(Scanner.java:939)at java.base/java.util.Scanner.next(Scanner.java:1594)at java.base/java.util.Scanner.nextDouble(Scanner.java:2564)at gangPackage.newClass.main(newClass.java:15)

Here is my code:

package gangPackage;import java.util.*;public class newClass {    public static void main (String[] args) {        Scanner Scan = new Scanner(System.in);        String name;        int age;        double gpa;        System.out.println("Enter your name: ");        name = Scan.nextLine();        System.out.println("Enter students age: ");        age = Scan.nextInt();        System.out.println("Enter your GPA: ");        gpa = Scan.nextDouble();        System.out.printf(name +" is " + age +" years old. And has a GPA of " + gpa);    }}