Zabbix server running but GUI says its not running

[ddoldersum]

Running Zabbix 5.2.6 and suddenly the GUI states the Zabbix Server isn't running anymore.
However the everthing else works.
Checking the services results in them all being Active as well
Any ideas what the issue could be?

[serloz]

1. check please your zabbix-server logs. maybe your zabbix not connected to database.
2. check your webserver. its running?

[ddoldersum]

Issue resolved. Was a migration issue where the hostname in the zabbix.conf.php did not correspond with the actual hostname of the server.
Strange thing is that it did work.