Hello everyone
I've used now Iris&Sodium since some weeks/month and was very happy about it but there is some problems...
Thirst, I've tried to do the update with the universel .Jar from the official website and every time trying to install... well... it doesn't do anything... So I've tried to do it manually myself and what a big mistake!...
Just after changing the Iris&Sodium.jar version I had into the iris-reserved folder for the newest and tried to launch it... well, I had the error message I showing you there... So I tried to unistall every mods, ressource packs and so on but still the same...
So I tried to uninstall totaly Minecraft...
Just re-installed it (so totaly new game), installed Iris&Sodium (always from the universal .jar from the official website) and still exactly the same error message...