Is this the only Idol you have issues with? This appears to be one you manually placed...
I found this: https://www.servuo.com/threads/using-valor-on-champion-altar.7749/ ~from 2017
My Server updates periodically through .git so I don't recall having this issue, but you may need to grab the newer scripts from the Champion System within ver. 57 (latest) Check HERE
Either straight up replace or merge changes/updates with WinMerge.
I Wish I could be more helpful; good luck.