Openfire don't restart after reboot

I expect that you’re using MySQL, which was recently upgraded. You will need to define (or change) a parameter in the JDBC connection string, to set the time zone to a recognized value, something like &serverTimezone=UTC

See https://discourse.igniterealtime.org/t/the-server-time-zone-value-cest-is-unrecognized-or-represents-more-than-one-time-zone/

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