Upgrade 3.4 to 4.0 Fail

[Mun]

Hi all,

I try to upgrade my zabbix v3.4 to 4.0 then i got this error " Database error : The frontend does not match Zabbix database. Current database version (mandatory/optional): 3050001/3050001. Required mandatory version: 4000000."

Can someone help me on this?

**My zabbix server log as attached.

[vesper1978]

Looks like you only upgraded the zabbix frontend and not the actual server itself.

[Mun]

thanks for point it out, what should i do then?

[Mun]

Looks like you only upgraded the zabbix frontend and not the actual server itself.

I did upgrade to mandatory version but then when i logged in, the GUI appears w/o data available.
Please find the log below.

Thanks.

[Mun]

I solved this issue with the link below.