decky lossless-scaling error

Hello,
I have managed to install lossless-scaling via the decky loader. I am using the latest build of ChimeraOS.
https://github.com/xXJSONDeruloXx/decky-lossless-scaling-vk/releases/tag/Latest

The program is also displayed in the quick launch bar. Unfortunately, I get an error message when I start it:
“Type Error: Failed to fetch”
Needs a new Version of SteamUI

I’ve tried this on two devices:
Ayaneo 2
Ayaneo Air

Is there any way to get the program to run on ChimeraOS? This would be a game changer, especially for older devices.

Many thanks in advance!