Zabbix DashBoard Failed Widget's

[Gsmith]

Hello All,
Having a problem if anyone could help or direct me. I’m using CentOS 7 virtual machine with Zabbix Server 4.2.6 which was upgraded to 4.2.7, MySQL/MariaDB 10, PHP 7.2. After the upgrade my Dashboard Widget's showed errors as follow;

Invalid parameter "Host groups/1": a number is expected.
Invalid parameter "Exclude host groups/1": a number is expected.
Invalid parameter "Hosts/1": a number is expected.
Invalid parameter "Severity/1": an integer is expected.

See attachment:

I removed all widgets and install new one, seem to work on the failed widgets I had, except the “Problem Host” widget. This widget still showed the same errors from above. I have tried upgrading my Server to Zabbix 4.4.x and the problem still remains.
My research into this matter was here, which for the most part was the only thing i could find.

https://support.zabbix.com/browse/ZB...hmentOrder=asc
https://support.zabbix.com/browse/ZB...5?filter=11754

Don’t know how to fix this. Should I just wait for an update? Any advice would be appreciated.
Thanks in advance.

[headhunterU23]

I have a similar issue with the dashboard. This is a test server, I added a host using auto-discovery using the agent on a Windows 2012 r2 host, I left the server alone for 4 days and came back to it today to keep testing this version (haven't used Zabbix since early 2011) and the dashboard died. Clicking on the setting wheel for each widget and just clicking "Apply" brings back the data. But I'd like to know where the issue comes from before I install a proper production server. I want to move from the deprecated Fully Automated Nagios but I might think it twice if the interface explodes in-flight after adding a few hosts and services

[headhunterU23]

Edit: Clicking on another page and going back to the dashboard brings back the same errors in the dashboard so the "click apply"

[headhunterU23]

It seems like I can't edit my previous posts. So I couldn't finish the above sentence. I think it's browser related, I'm using Microsoft Edge and I had issues both to post a message on this forum and with the test server. Switching to Firefox allowed me to post here without the need to upload an image (otherwise click "post reply" was doing nothing) and shows no error whatsoever with the dashboard

[valerio.bozzolan]

I absolutely don't know what happened but I've cleared the cache and now it works again.