Title says it all. This is the crash report. And yes, as soon as I remove Ars Nouveau it works perfectly

---- Minecraft Crash Report ----
// This doesn't make any sense!

Time: 19.10.21 15:26
Description: Mod loading error has occurred

java.lang.Exception: Mod Loading has failed
at net.minecraftforge.fml.CrashReportExtender.dumpModLoadingCrashReport(CrashReportExtender.java:85) ~[forge:?] {re:classloading}
at net.minecraftforge.fml.server.ServerModLoader.load(ServerModLoader.java:51) ~[forge:?] {re:classloading}
at net.minecraft.server.Main.main(Main.java:95) ~[?:?] {re:classloading}
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_301] {}
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_301] {}
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_301] {}
at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_301] {}
at net.minecraftforge.fml.loading.FMLServerLaunchProvider.lambda$launchService$0(FMLServerLaunchProvider.java:51) ~[forge-1.16.5-36.2.4.jar:36.2] {}
at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-8.0.9.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-8.0.9.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-8.0.9.jar:?] {}
at cpw.mods.modlauncher.Launcher.run(Launcher.java:82) [modlauncher-8.0.9.jar:?] {}
at cpw.mods.modlauncher.Launcher.main(Launcher.java:66) [modlauncher-8.0.9.jar:?] {}
at net.minecraftforge.server.ServerMain$Runner.runLauncher(ServerMain.java:63) [forge-1.16.5-36.2.4.jar:?] {}
at net.minecraftforge.server.ServerMain$Runner.access$100(ServerMain.java:60) [forge-1.16.5-36.2.4.jar:?] {}
at net.minecraftforge.server.ServerMain.main(ServerMain.java:57) [forge-1.16.5-36.2.4.jar:?] {}

A detailed walkthrough of the error, its code path and all known details is as follows:

-- Head --
Thread: main
Stacktrace:
at net.minecraftforge.fml.CrashReportExtender.lambda$dumpModLoadingCrashReport$7(CrashReportExtender.java:88) ~[forge:?] {re:classloading}
-- MOD ars_nouveau --
Details:
Mod File: ars_nouveau-1.16.5-1.23.11.jar
Failure message: Mod ars_nouveau requires patchouli 1.16-42 or above
Currently, patchouli is not installed
Mod Version: 1.23.11
Mod Issue URL: https://github.com/baileyholl/Ars-Nouveau
Exception message: MISSING EXCEPTION MESSAGE
Stacktrace:
at net.minecraftforge.fml.CrashReportExtender.lambda$dumpModLoadingCrashReport$7(CrashReportExtender.java:88) ~[forge:?] {re:classloading}
at java.util.ArrayList.forEach(Unknown Source) ~[?:1.8.0_301] {}
at net.minecraftforge.fml.CrashReportExtender.dumpModLoadingCrashReport(CrashReportExtender.java:86) ~[forge:?] {re:classloading}
at net.minecraftforge.fml.server.ServerModLoader.load(ServerModLoader.java:51) ~[forge:?] {re:classloading}
at net.minecraft.server.Main.main(Main.java:95) ~[?:?] {re:classloading}
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_301] {}
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_301] {}
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_301] {}
at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_301] {}
at net.minecraftforge.fml.loading.FMLServerLaunchProvider.lambda$launchService$0(FMLServerLaunchProvider.java:51) ~[forge-1.16.5-36.2.4.jar:36.2] {}
at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-8.0.9.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-8.0.9.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-8.0.9.jar:?] {}
at cpw.mods.modlauncher.Launcher.run(Launcher.java:82) [modlauncher-8.0.9.jar:?] {}
at cpw.mods.modlauncher.Launcher.main(Launcher.java:66) [modlauncher-8.0.9.jar:?] {}
at net.minecraftforge.server.ServerMain$Runner.runLauncher(ServerMain.java:63) [forge-1.16.5-36.2.4.jar:?] {}
at net.minecraftforge.server.ServerMain$Runner.access$100(ServerMain.java:60) [forge-1.16.5-36.2.4.jar:?] {}
at net.minecraftforge.server.ServerMain.main(ServerMain.java:57) [forge-1.16.5-36.2.4.jar:?] {}

-- MOD ars_nouveau --
Details:
Mod File: ars_nouveau-1.16.5-1.23.11.jar
Failure message: Mod ars_nouveau requires curios 1.16.3-4.0.1.0 or above
Currently, curios is not installed
Mod Version: 1.23.11
Mod Issue URL: https://github.com/baileyholl/Ars-Nouveau
Exception message: MISSING EXCEPTION MESSAGE

-- System Details --
Details:
Minecraft Version: 1.16.5
Minecraft Version ID: 1.16.5
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_301, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 8234522248 bytes (7853 MB) / 9404153856 bytes (8968 MB) up to 11397496832 bytes (10869 MB)
CPUs: 16
JVM Flags: 2 total; -Xms6144M -Xmx12228M
ModLauncher: 8.0.9+86+master.3cf110c
ModLauncher launch target: fmlserver
ModLauncher naming: srg
ModLauncher services:
/mixin-0.8.2.jar mixin PLUGINSERVICE
/eventbus-4.0.0.jar eventbus PLUGINSERVICE
/forge-1.16.5-36.2.4.jar object_holder_definalize PLUGINSERVICE
/forge-1.16.5-36.2.4.jar runtime_enum_extender PLUGINSERVICE
/accesstransformers-3.0.1.jar accesstransformer PLUGINSERVICE
/forge-1.16.5-36.2.4.jar capability_inject_definalize PLUGINSERVICE
/forge-1.16.5-36.2.4.jar runtimedistcleaner PLUGINSERVICE
/mixin-0.8.2.jar mixin TRANSFORMATIONSERVICE
/forge-1.16.5-36.2.4.jar fml TRANSFORMATIONSERVICE
FML: 36.2
Forge: net.minecraftforge:36.2.4
FML Language Providers:
[email protected]
minecraft@1
[email protected]
Mod List:
forge-1.16.5-36.2.4-server.jar |Minecraft |minecraft |1.16.5 |NONE |Manifest: NOSIGNATURE
forge-1.16.5-36.2.4-universal.jar |Forge |forge |36.2.4 |NONE |Manifest: 22:af:21:d8:19:82:7f:93:94:fe:2b:ac:b7:e4:41:57:68:39:87:b1:a7:5c:c6:44:f9:25:74:21:14:f5:0d:90

Mod ars_nouveau requires curios 1.16.3-4.0.1.0 or above