[1.16.5] Invalid spell cast found! This is a bug and should be reported! about ars-elemental

[Alexthw46]

Just to make sure, will it happen only with a full spell?
The error is probably simple but it's mostly harmless and more importantly 1.16.5 is no longer supported so I'm not sure if this will be fixed, setting up an old env is for some reasons extremely time consuming

[CactusPuppy]

The error does seem to be loosely correlated with some kind of issue which causes players to lose levels in Mining in Project MMO, and the mining level reset has not been seen outside of using projectiles. I'll try and collect more information, but looking deeper, I do not think the Project MMO mining level resets are due to this mod, so I'll close this issue for now unless more information arises which would indicate this mod is at fault.

[CactusPuppy]

Just to make sure, will it happen only with a full spell? The error is probably simple but it's mostly harmless and more importantly 1.16.5 is no longer supported so I'm not sure if this will be fixed, setting up an old env is for some reasons extremely time consuming

And just to answer this question, it appears to happen when Conjure Terrain is used with any amount of AOE, even if the form is not projectile and the spell is not full.

Example server log snippet

[00:30:43] [Server thread/INFO] [STDOUT/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:49]: =======
[00:30:43] [Server thread/INFO] [STDOUT/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:50]: Invalid spell cast found! This is a bug and should be reported!
[00:30:43] [Server thread/INFO] [STDOUT/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:51]: Underfoot -> Conjure Terrain -> AOE
[00:30:43] [Server thread/INFO] [STDOUT/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:52]: Casting player: 
[00:30:43] [Server thread/INFO] [STDOUT/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:53]: ServerPlayerEntity['CactusPuppy'/241016, l='ServerLevel[world]', x=1061.37, y=95.44, z=200.93]
[00:30:43] [Server thread/INFO] [STDOUT/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:54]: Casting tile:
[00:30:43] [Server thread/INFO] [STDOUT/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:55]: null
[00:30:43] [Server thread/INFO] [STDOUT/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:56]: =======
[00:30:43] [Server thread/INFO] [STDERR/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:57]: java.lang.IndexOutOfBoundsException: Index: 3, Size: 3
[00:30:43] [Server thread/INFO] [STDERR/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:57]:  at java.util.ArrayList.rangeCheck(ArrayList.java:659)
[00:30:43] [Server thread/INFO] [STDERR/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:57]:  at java.util.ArrayList.get(ArrayList.java:435)
[00:30:43] [Server thread/INFO] [STDERR/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:57]:  at com.hollingsworth.arsnouveau.api.spell.SpellContext.nextSpell(SpellContext.java:47)
[00:30:43] [Server thread/INFO] [STDERR/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:57]:  at com.hollingsworth.arsnouveau.api.spell.SpellResolver.resolveEffects(SpellResolver.java:142)
[00:30:43] [Server thread/INFO] [STDERR/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:57]:  at com.hollingsworth.arsnouveau.api.spell.SpellResolver.onResolveEffect(SpellResolver.java:128)
[00:30:43] [Server thread/INFO] [STDERR/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:57]:  at com.hollingsworth.arsnouveau.common.spell.method.MethodUnderfoot.onCast(MethodUnderfoot.java:33)
[00:30:43] [Server thread/INFO] [STDERR/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:57]:  at com.hollingsworth.arsnouveau.api.spell.SpellResolver.onCast(SpellResolver.java:109)
[00:30:43] [Server thread/INFO] [STDERR/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:57]:  at com.hollingsworth.arsnouveau.common.items.SpellBook.func_77659_a(SpellBook.java:149)
[00:30:43] [Server thread/INFO] [STDERR/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:57]:  at net.minecraft.item.ItemStack.func_77957_a(ItemStack.java:216)
[00:30:43] [Server thread/INFO] [STDERR/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:57]:  at net.minecraft.server.management.PlayerInteractionManager.func_187250_a(PlayerInteractionManager.java:287)
[00:30:43] [Server thread/INFO] [STDERR/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:57]:  at net.minecraft.network.play.ServerPlayNetHandler.func_147346_a(ServerPlayNetHandler.java:982)
[00:30:43] [Server thread/INFO] [STDERR/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:57]:  at net.minecraft.network.play.client.CPlayerTryUseItemPacket.func_148833_a(SourceFile:31)
[00:30:43] [Server thread/INFO] [STDERR/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:57]:  at net.minecraft.network.play.client.CPlayerTryUseItemPacket.func_148833_a(SourceFile:9)
[00:30:43] [Server thread/INFO] [STDERR/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:57]:  at net.minecraft.network.PacketThreadUtil.func_225383_a(SourceFile:21)
[00:30:43] [Server thread/INFO] [STDERR/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:57]:  at net.minecraft.util.concurrent.TickDelayedTask.run(SourceFile:18)
[00:30:43] [Server thread/INFO] [STDERR/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:57]:  at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213166_h(SourceFile:144)
[00:30:43] [Server thread/INFO] [STDERR/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:57]:  at net.minecraft.util.concurrent.RecursiveEventLoop.func_213166_h(SourceFile:23)
[00:30:43] [Server thread/INFO] [STDERR/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:57]:  at net.minecraft.server.MinecraftServer.func_213166_h(MinecraftServer.java:734)
[00:30:43] [Server thread/INFO] [STDERR/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:57]:  at net.minecraft.server.MinecraftServer.func_213166_h(MinecraftServer.java:159)
[00:30:43] [Server thread/INFO] [STDERR/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:57]:  at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213168_p(SourceFile:118)
[00:30:43] [Server thread/INFO] [STDERR/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:57]:  at net.minecraft.server.MinecraftServer.func_213205_aW(MinecraftServer.java:717)
[00:30:43] [Server thread/INFO] [STDERR/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:57]:  at net.minecraft.server.MinecraftServer.func_213168_p(MinecraftServer.java:711)
[00:30:43] [Server thread/INFO] [STDERR/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:57]:  at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213161_c(SourceFile:127)
[00:30:43] [Server thread/INFO] [STDERR/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:57]:  at net.minecraft.server.MinecraftServer.func_213202_o(MinecraftServer.java:697)
[00:30:43] [Server thread/INFO] [STDERR/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:57]:  at net.minecraft.server.MinecraftServer.func_240802_v_(MinecraftServer.java:646)
[00:30:43] [Server thread/INFO] [STDERR/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:57]:  at net.minecraft.server.MinecraftServer.func_240783_a_(MinecraftServer.java:232)
[00:30:43] [Server thread/INFO] [STDERR/]: [com.hollingsworth.arsnouveau.api.spell.SpellContext:nextSpell:57]:  at java.lang.Thread.run(Thread.java:748)