What is arducam-pivariety_mono.json?

When typing libcamera-hello in my raspberry pi 4 (connected to a Dual OV2311 stereo camera) I can see the images.
However I am intrigued by several messages that appear.

First a Warning. camera_senseor_properties.cpp:265 No static properties available for ‘arducam-pivariety’ -->> What does this mean?



Error IPAProxy ipa_proxy.cpp:149 Configuration file ‘arducam-pivariety_mon.json’ not found for IPA module ‘rpi/vc4’ ==> what is this file for and how can I get it?