fix zalo 647 error

How to fix Zalo 600, 602, 606, 647
during the login process and using zalo, you will encounter some errors that cannot be used. some errors will be reported like zalo error 600, 602, 606, 647.
Instructions on how to fix error 647 on Zalo application
the 647 error on zalo is a frequently encountered error in the process we install and use the application. so how can i fix the cause when zalo reports 647 error?