how to fix zalo pc

How to fix errors do not type Vietnamese on Zalo
one of the most frequent errors in the zalo pc version is that users cannot type vietnamese, while other programs can still type.
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.