Zabbix v 6.0 does not allow you to set up an event notification.

[korrado]

Zabbix v 6.0 does not allow you to set up an event notification. The event itself is not notified, but the trigger fix notification is sent.
In my case, there was only an E-mail notification. So it was in the same event with the same users.

Event -> No message defined for media type
Resolved -> Message sended success