I am currently playing on Fabric with the Archon Mod. I am set in Single Player and I summoned Inigo and the game crashed. I have attached photos of the error message I get. I am kicked off and sent to the Multiplayer Server page.

For reference:

I have not modded the modpack in any way.
I am using ATLauncher and currently playing 1.20.1
I am using V0.5.5 of the Archon Mod
The crash can be replicated by logging back into Singlelayer and just looking in Inigo's direction causes the crash to happen.
There is not a crash report in the folder.

Do you happen to have anything in your server logs? Not a crash report but just the normal logs. I have had reports of this issue and I can't seem to get the stacktrace.

I was able to load and walk around and move away from Inigo and when it followed me and looked at me the following showed on the ATLauncher log:

[14/10/2023 12:02:40 PM] [Netty Local Client IO #1/ERROR] Encountered exception while handling in channel with name "archon:inferno_laser"
[14/10/2023 12:02:40 PM] [Server thread/INFO] MINECRAFTUSERNAME lost connection: Internal Exception: java.nio.channels.ClosedChannelException
[14/10/2023 12:02:40 PM] [Server thread/INFO] MINECRAFTUSERNAME left the game
[14/10/2023 12:02:40 PM] [Server thread/INFO] Updating all forceload tickets for 109cff53-12fa-46d9-a331-167caf2ebbea
[14/10/2023 12:02:40 PM] [Server thread/INFO] Stopping singleplayer server as player logged out
[14/10/2023 12:02:40 PM] [Server thread/INFO] Invalidated damage temperature effect registry cache
[14/10/2023 12:02:40 PM] [Server thread/INFO] Resetting environment controller...
[14/10/2023 12:02:40 PM] [Server thread/INFO] Stopping server
[14/10/2023 12:02:40 PM] [Server thread/INFO] Saving players
[14/10/2023 12:02:40 PM] [Server thread/INFO] Saving worlds
[14/10/2023 12:02:41 PM] [Render thread/INFO] Minimap session finalized.
[14/10/2023 12:02:41 PM] [Render thread/INFO] Finalizing world map session...
[14/10/2023 12:02:41 PM] [Thread-11/INFO] World map force-cleaned!
[14/10/2023 12:02:41 PM] [Render thread/INFO] World map session finalized.

I greatly appreciate the logs as I think they have helped me fix the issue. I am posting a new file right now, I hope the crash is gone for good now.