java.sql.SQLException: The server time zone value 'xxx' is unrecognized or represents more than one time zone. SpringBoot起動時のエラー

2021-02-10 23:21:53.621 ERROR 13788 --- [  restartedMain] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Exception during pool initialization.

java.sql.SQLException: The server time zone value '���� (�W����)' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the 'serverTimezone' configuration property) to use a more specific time zone value if you want to utilize time zone support.
	at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:129) ~[mysql-connector-java-8.0.22.jar:8.0.22]
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	at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) ~[spring-boot-devtools-2.4.2.jar:2.4.2]
Caused by: com.mysql.cj.exceptions.InvalidConnectionAttributeException: The server time zone value '���� (�W����)' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the 'serverTimezone' configuration property) to use a more specific time zone value if you want to utilize time zone support.
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:na]
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	at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:826) ~[mysql-connector-java-8.0.22.jar:8.0.22]
	... 57 common frames omitted

2021-02-10 23:21:53.639  WARN 13788 --- [  restartedMain] o.s.jdbc.support.SQLErrorCodesFactory    : Error while extracting database name

org.springframework.jdbc.support.MetaDataAccessException: Error while extracting DatabaseMetaData; nested exception is java.sql.SQLException: The server time zone value '���� (�W����)' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the 'serverTimezone' configuration property) to use a more specific time zone value if you want to utilize time zone support.
	at org.springframework.jdbc.support.JdbcUtils.extractDatabaseMetaData(JdbcUtils.java:366) ~[spring-jdbc-5.3.3.jar:5.3.3]
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	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
Caused by: com.mysql.cj.exceptions.InvalidConnectionAttributeException: The server time zone value '���� (�W����)' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the 'serverTimezone' configuration property) to use a more specific time zone value if you want to utilize time zone support.

	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
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	at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) ~[spring-boot-devtools-2.4.2.jar:2.4.2]
Caused by: java.sql.SQLException: The server time zone value '���� (�W����)' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the 'serverTimezone' configuration property) to use a more specific time zone value if you want to utilize time zone support.
	at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:129) ~[mysql-connector-java-8.0.22.jar:8.0.22]
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	at org.springframework.jdbc.support.JdbcUtils.extractDatabaseMetaData(JdbcUtils.java:340) ~[spring-jdbc-5.3.3.jar:5.3.3]
	... 42 common frames omitted
Caused by: com.mysql.cj.exceptions.InvalidConnectionAttributeException: The server time zone value '���� (�W����)' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the 'serverTimezone' configuration property) to use a more specific time zone value if you want to utilize time zone support.
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:na]
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	at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:826) ~[mysql-connector-java-8.0.22.jar:8.0.22]
	... 57 common frames omitted

Caused by: java.sql.SQLException: The server time zone value '���� (�W����)' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the 'serverTimezone' configuration property) to use a more specific time zone value if you want to utilize time zone support.

Caused by: com.mysql.cj.exceptions.InvalidConnectionAttributeException: The server time zone value '���� (�W����)' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the 'serverTimezone' configuration property) to use a more specific time zone value if you want to utilize time zone support.

spring.datasource.url=jdbc:mysql://localhost:3306/happy_library
spring.datasource.username=springuser
spring.datasource.password=ThePassword

spring.datasource.url=jdbc:mysql://localhost:3306/happy_library?serverTimezone=JST
spring.datasource.username=springuser
spring.datasource.password=ThePassword