Zabbix 8.0.0rc1 is out - watch out for a simple minefield - What's up, home? part 149
TLDR; If upgrading to Zabbix 8.0.0rc1 causes your Zabbix UI to completely die to “Component router is not registered” message, try disabling 3rd party modules.
Zabbix 8.0.0rc1 is out! My What's up, home? Zabbix had been running on 8.0.0beta2 successfully, but during 8.0.0rc1 upgrade it was a close call that this would have been one of those flights where a plane lands but passengers take off. Luckily, the solution was simple. Huge thanks for one of the Zabbix support engineers for pointing me out to correct direction.