[Observium] Missing information in alert emails

Hello,

Since we've upgraded Observium to the latest version (21.6.11399 (stable)) the alert emails we receive are missing information for most of the devices.

Prior to the upgrade email alerts looked like this:

After the upgrade alert e-mails look like this:

We can revert the virtual machine to the state prior to upgarde but we'd prefer to have it running the latest version of Observium.

Does anybody ha san idea on what could be the problem here?

Thanks.

Kind regardss,

Haris