Mysql account

I tried to create a mysql account using localhost. I get the following error, can you please help.

Failed to validate account: Failed to retrieve a database connection. Cause: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. (Reason: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.; Resolution: Address the reported issue.)

hostname :localhost
port number : 3306
db name : employees
user name :root
pw :XXXXXX
jdbc driver class :com.mysql.jdbc.Driver
added mysql-connector-java-8.0.26.jar as jar file.

Please let me know if I miss anything.

Thanks
Sangeetha