If the time stored in the missing daylight saving hour, MySQL JDBC driver starting from version 8.0.23 will raise this error (https://dev.mysql.com/doc/relnotes/connector-j/en/news-8-0-23.html)
If the date time value stored in the column actually is UTC time, then will return string representation of the value, not the time converted to the local time zone.

When time zone is changed, JDBC connection still will contain initial time zone. Therefore we need to recreate connection with the newly set TZ

With AR default timezone set to :local, PostgreSQL driver will try to convert missing DST time and will fail.

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