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    MySQL doesn't support some types of characters (such as emojis) with the utf8 encoding. You need to be on MySQL 5.5+ and force utf8mb4 (everywhere, client and server). You can do this sending the query "SET NAMES utf8mb4". Check this https://goo.gl/3E2qzg

Solutions on the web

via csdn.net by Unknown author, 1 year ago
via Stack Overflow by nenito
, 1 year ago
Access denied for user 'nunit '@'localhost' (using password: YES)
via Stack Overflow by Daniel Euchar
, 2 years ago
Access denied for user 'root'@'localhost' (using password: YES)
via Stack Overflow by user1027562
, 2 years ago
Access denied for user 'root'@'localhost' (using password: YES)
via Stack Overflow by idontknow
, 2 years ago
Access denied for user 'sonar'@'localhost' (using password: YES)
java.sql.SQLException: Access denied for user 'root'@'host08' (using password: YES)	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1084)	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4232)	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4164)	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:926)	at com.mysql.jdbc.MysqlIO.secureAuth411(MysqlIO.java:4732)	at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1340)	at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2506)	at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2539)	at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2321)	at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:832)	at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:46)	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)