39 protocol has changed

[yantao]

com.huangzhimin.contacts.exception.ContactsException: 139 protocol has changed
at com.huangzhimin.contacts.email.EmailImporter.getContacts(EmailImporter.java:103)
at com.test.Main.main(Main.java:26)
Caused by: com.huangzhimin.contacts.exception.ContactsException: 139 protocol has changed
at com.huangzhimin.contacts.email.OneThreeNineImporter.doLogin(OneThreeNineImporter.java:48)
at com.huangzhimin.contacts.email.EmailImporter.getContacts(EmailImporter.java:99)
... 1 more
Caused by: java.lang.NullPointerException
at com.huangzhimin.contacts.email.EmailImporter.getUsername(EmailImporter.java:454)
at com.huangzhimin.contacts.email.OneThreeNineImporter.doLogin(OneThreeNineImporter.java:38)
... 2 more