Installing but not working

[mnedix]

Heya, as the name title implies, I can't install this Endless node. I tried both via the ComfyUI Manager and prompt line and it simply doesn't want to work. I get no installation error messages.
It's a pity, I really wanted an efficient save node just to strip down the workflow, set the modelname and seed and set custom path.
Perhaps, if you have time, you can have a look at it.