#Client does not support authentication protocol requested by server; consider upgrading MySQL client

Background: unknown, only my personal situation for reference. The question is not sure if it is related to Noje.js , that is, ES6 is directly related, and whether it is inevitable or not is uncertain Node.js When developing the server, the parameters such as the domain name (localhost), port (3306), user name (root), password, etc. are set correctly, but still an error is reported.

Premise: the computer has installed (1) MySQL (current version 8.0). It is recommended to install (2) MySQL database visualization software, such as Navicat.

#Solution steps:
[solution]
connect to the database (best through third-party software like Navicat or console), and input the following contents:

mysql> ALTER USER ‘root’@‘localhost’ IDENTIFIED WITH mysql_native_password BY ‘New root password’; 

(here “;” please note)

It is recommended to close the running server (if it exists, whether it is successfully started or not), check the new database password, and then restart
refer to stack overflow https://stackoverflow.com/questions/50093144/mysql-8-0-client-does-not-support-authentication-protocol-requested-by-server

#Note:
I don’t quite understand the cause of this problem and how it was solved. So I suggest that you follow the example.
Theoretically, this command only resets the password of root. If the password before and after reset is the same, it should not report an error at the beginning

Please try this solution first, if it is invalid, then consider upgrading MySQL version.