Describe the bug

Just changed from Sodium Dynamic Lightning to this mod, and game crash when I try to connect to server (Lamb is installed only on Client)

To Reproduce
Steps to reproduce the behavior:

1. Go to Multiplayer
2. Try to connect to my server
3. Game crash

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: Windows 11
• Minecraft 1.21.1
  NeoForge 1.21.1 Modloader .208
• Mods LambDynLight 4.5.0

Additional context
The CrashLog Client

I don't know if I should start by posting the topic here or on the Ars github, let me know if I need to open a second topic about Ars mod, I'll do

For informations , I have Ars Lumos too
Stay here if u need more info

This is a known issue.

This is something that needs to be addressed within Ars Nouveau and I've already started working towards this: baileyholl/Ars-Nouveau#1933.

Until this is resolved the two mods are essentially incompatible.

I hadn't seen that the problem had already been reported, sorry for the dup' ! ^^
Thank you, I'll keep looking at it in that case 👀

Ars Nouveau 5.10.6 just released which fixes this incompatibility.