[Solved!] Server-exclusive error

[chubel10]

I am having an issue regarding a NoSuchMethodError but only when connected to my server.

 

Here is the crash report:

 

 

 

 

 

Spoiler

---- Minecraft Crash Report ----
// Oops.

Time: 5/4/20, 5:52 PM
Description: Ticking entity

java.lang.NoSuchMethodError: net.minecraft.world.Explosion.<init>(Lnet/minecraft/world/World;Lnet/minecraft/entity/Entity;DDDFZLnet/minecraft/world/Explosion$Mode;Ljava/util/List;)V
	at com.chubel.obamiummod.entity.ModFloatingEntity.deflagrate(ModFloatingEntity.java:293) ~[?:1.15.2-0.1.0] {re:classloading,pl:runtimedistcleaner:A}
	at com.chubel.obamiummod.entity.ModFloatingEntity.func_184549_a(ModFloatingEntity.java:233) ~[?:1.15.2-0.1.0] {re:classloading,pl:runtimedistcleaner:A}
	at com.chubel.obamiummod.entity.ModFloatingEntity.func_70071_h_(ModFloatingEntity.java:152) ~[?:1.15.2-0.1.0] {re:classloading,pl:runtimedistcleaner:A}
	at net.minecraft.world.server.ServerWorld.func_217479_a(ServerWorld.java:600) ~[?:?] {re:classloading,pl:runtimedistcleaner:A}
	at net.minecraft.world.World.func_217390_a(World.java:536) ~[?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.world.server.ServerWorld.func_72835_b(ServerWorld.java:401) ~[?:?] {re:classloading,pl:runtimedistcleaner:A}
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:849) ~[?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:330) ~[?:?] {re:classloading,pl:accesstransformer:B}
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:784) ~[?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:637) [?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at java.lang.Thread.run(Unknown Source) [?:?] {}


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

-- Head --
Thread: Server thread
Stacktrace:
	at com.chubel.obamiummod.entity.ModFloatingEntity.deflagrate(ModFloatingEntity.java:293)
	at com.chubel.obamiummod.entity.ModFloatingEntity.func_184549_a(ModFloatingEntity.java:233)
	at com.chubel.obamiummod.entity.ModFloatingEntity.func_70071_h_(ModFloatingEntity.java:152)
	at net.minecraft.world.server.ServerWorld.func_217479_a(ServerWorld.java:600)

-- Entity being ticked --
Details:
	Entity Type: obamiummod:obamium_bullet (com.chubel.obamiummod.entity.ModFloatingEntity)
	Entity ID: 14029
	Entity Name: Obamium Bullet
	Entity's Exact location: -5718.98, 13.19, -537.59
	Entity's Block location: World: (-5719,13,-538), Chunk: (at 9,0,6 in -358,-34; contains blocks -5728,0,-544 to -5713,255,-529), Region: (-12,-2; contains chunks -384,-64 to -353,-33, blocks -6144,0,-1024 to -5633,255,-513)
	Entity's Momentum: -0.03, 0.08, 0.01
	Entity's Passengers: []
	Entity's Vehicle: ~~ERROR~~ NullPointerException: null
Stacktrace:
	at net.minecraft.world.World.func_217390_a(World.java:536)
	at net.minecraft.world.server.ServerWorld.func_72835_b(ServerWorld.java:401)

-- Affected level --
Details:
	All players: 1 total; [ServerPlayerEntity['<username>'/94, l='test', x=-5718.30, y=11.00, z=-537.70]]
	Chunk stats: ServerChunkCache: 4050
	Level dimension: DimensionType{minecraft:overworld}
	Level name: test
	Level seed: -1880086591217638626
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: {}
	Level spawn location: World: (-48,85,16), Chunk: (at 0,5,0 in -3,1; contains blocks -48,0,16 to -33,255,31), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Level time: 49255 game time, 16087 day time
	Known server brands: forge
	Level was modded: true
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 28758 (now: false), thunder time: 49847 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Stacktrace:
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:849)
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:330)
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:784)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:637)
	at java.base/java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
	Minecraft Version: 1.15.2
	Minecraft Version ID: 1.15.2
	Operating System: Linux (amd64) version 4.15.0-91-generic
	Java Version: 9.0.4, Oracle Corporation
	Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 619702952 bytes (590 MB) / 1073741824 bytes (1024 MB) up to 1073741824 bytes (1024 MB)
	CPUs: 32
	JVM Flags: 6 total; -XX:+UnlockExperimentalVMOptions -XX:+UseCGroupMemoryLimitForHeap -XX:MaxRAMFraction=2 -Xms1024M -Xmx1024M -XX:-UsePerfData
	ModLauncher: 5.1.0+69+master.79f13f7
	ModLauncher launch target: fmlserver
	ModLauncher naming: srg
	ModLauncher services: 
		/eventbus-2.1.0-service.jar eventbus PLUGINSERVICE 
		/forge-1.15.2-31.1.63.jar object_holder_definalize PLUGINSERVICE 
		/forge-1.15.2-31.1.63.jar runtime_enum_extender PLUGINSERVICE 
		/forge-1.15.2-31.1.63.jar capability_inject_definalize PLUGINSERVICE 
		/accesstransformers-2.1.1-shadowed.jar accesstransformer PLUGINSERVICE 
		/forge-1.15.2-31.1.63.jar runtimedistcleaner PLUGINSERVICE 
		/forge-1.15.2-31.1.63.jar fml TRANSFORMATIONSERVICE 
	FML: 31.1
	Forge: net.minecraftforge:31.1.63
	FML Language Providers: 
		[email protected]
		minecraft@1
	Mod List: 
		forge-1.15.2-31.1.63-server.jar Minecraft {[email protected] DONE}
		obamiummod-1.15.2-0.1.0.jar Obamium Mod {[email protected] DONE}
		forge-1.15.2-31.1.63-universal.jar Forge {[email protected] DONE}
	Player Count: 1 / 20; [ServerPlayerEntity['<username>'/94, l='test', x=-5718.30, y=11.00, z=-537.70]]
	Data Packs: vanilla, mod:obamiummod, mod:forge (incompatible)
	Is Modded: Definitely; Server brand changed to 'forge'
	Type: Dedicated Server (map_server.txt)

 

 

And here is the class for the entity that is giving me trouble: https://github.com/Chubel10/ObamiumMod/blob/master/src/main/java/com/chubel/obamiummod/entity/ModFloatingEntity.java

 

Help would be greatly appreciated!

 

[ChampionAsh5357]

There are three constructors in Explosion, two of which are client side only.

[chubel10]

I see! thank you.

 

But only the constructors that are client side take an argument for affectedBlockPositionsIn which I need. How could I go about adding specific blocks to the List<BlockPos> affectedBlockPositions field without using reflection?

 

Thanks in advance!

[Azaka7]

You can still access Explosion.getAffectedBlockPositions(). Even though the List is final, you can still make changes to it, because it's an ArrayList.

[chubel10]

Thank you both very much!