Zabbix server is running no after ubuntu restart

[Fasih]

Hi guys, recently I downloaded zabbix 6.0 on ubuntu 20.04 as my hyper-v VM(My Server)...soo in start it works fine.
I configure auto shutdown server at night and auto start in the morning...so the issue is that whenever my server goes up...my zabbix server says running no msg....but when I turn back and apply checkpoint to my VM it works normal...
Here is my log

1458:20220804:113959.616 database is down: reconnecting in 10 seconds
1458:20220804:114009.616 [Z3001] connection to database 'zabbix' failed: [0] could not connect to server: Connection refused
Is the server running on host "localhost" (127.0.0.1) and accepting
TCP/IP connections on port 5432?

Kindly please help me because my all network monitoring is stop from 2 days.
Thank you.

[LenR]

Make sure that your database is set to start at boot and is running now.

[Fasih]

Thanks for replying.
After a reboot, mysql, zabbix and zabbix agent status is running so I think that database is starting after boot but connection is refused.
I check boot after setting in system and mysql is present over there.