java.lang.NoSuchMethodException: userAuth.User.()

Question

I have the class with validation:

public class User {
    @Size(min=3, max=20, message=\"User name must be between 3 and 20 characters long\")
    @Pattern(r         


        

Answer 1

Add constructor without parameters:

public class User {
  ...
  public User() {}
  ...
}