Second Hass retrieving via MQTT data from prim. Hass, but graphs are not working. [solved]

Helllo,
I want to share my weather station data with my neighbour but the user management in Hass is too limited.
So I want to run a dedicated Hass with only the weather station data and share it via Hass cloud.
My main Hass is running on an Intel Nuc, including the RTL_433, MQTT broker, HASS MQTT, etc. All relevant weather station data is shown via lovelace.

On a RPi I restored a backup from the “main Hass” and removed everything I do not need. Hass MQTT on he RPi is collecting the data from my “main Hass”. So far so good and almost everything is working. Windspeed, Lux,etc. data are shown correctly on the Rpi Hass, however the Apexcharts only shows “Loading”. I have no idea why.
Any Idea how to solve this?
(Btw, the same issue with the windrose-card)

Solved:
Although the RPi Hass is a restore from the NUC Hass there is no “History” statement in the configuration file. After adding “History” to the config fiile on the RPi the graphs showed up.

Printscreen Intel Nuc main Hass

Printscreen RPi Hass (weather only)