[1.21.1] Crash with NeoForge

[Lolothepro]

Exception caught during firing event: null
	Index: 0
	Listeners:
		0: net.neoforged.bus.EventListenerFactory$setModelProperties/0x000075b4bce14400@4804762d
		1: net.neoforged.bus.EventListenerFactory$onClientSetup/0x000075b4bce1c400@33de69bb
java.util.ConcurrentModificationException
	at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1229)
	at TRANSFORMER/[email protected]/net.minecraft.client.renderer.item.ItemProperties.register(ItemProperties.java:61)
	at TRANSFORMER/[email protected]/com.kwpugh.easy_steel.items.baseclasses.BowUtils.setupBowModelProperties(BowUtils.java:46)
	at TRANSFORMER/[email protected]/com.kwpugh.easy_steel.events.BowModelEventHandler.setModelProperties(BowModelEventHandler.java:17)
	at MC-BOOTSTRAP/net.neoforged.bus/net.neoforged.bus.EventBus.post(EventBus.java:350)
	at MC-BOOTSTRAP/net.neoforged.bus/net.neoforged.bus.EventBus.post(EventBus.java:315)
	at MC-BOOTSTRAP/[email protected]/net.neoforged.fml.ModContainer.acceptEvent(ModContainer.java:158)
	at MC-BOOTSTRAP/[email protected]/net.neoforged.fml.ModLoader.lambda$dispatchParallelEvent$4(ModLoader.java:172)
	at MC-BOOTSTRAP/[email protected]/net.neoforged.fml.ModLoader.lambda$dispatchParallelTask$7(ModLoader.java:231)
	at java.base/java.util.concurrent.CompletableFuture.uniHandle(CompletableFuture.java:934)
	at java.base/java.util.concurrent.CompletableFuture$UniHandle.tryFire(CompletableFuture.java:911)
	at java.base/java.util.concurrent.CompletableFuture$Completion.exec(CompletableFuture.java:483)
	at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:387)
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1312)
	at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1843)
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1808)
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:188)
Caught exception during event FMLClientSetupEvent dispatch for modid easy_steel
java.util.ConcurrentModificationException: null
	at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1229) ~[?:?] {re:mixin}
	at TRANSFORMER/[email protected]/net.minecraft.client.renderer.item.ItemProperties.register(ItemProperties.java:61) ~[client-1.21.1-20240808.144430-srg.jar%23179!/:?] {re:classloading,pl:runtimedistcleaner:A}
	at TRANSFORMER/[email protected]/com.kwpugh.easy_steel.items.baseclasses.BowUtils.setupBowModelProperties(BowUtils.java:46) ~[EasySteel-NeoForge-1.21.1-1.9.12.jar%23183!/:?] {re:classloading}
	at TRANSFORMER/[email protected]/com.kwpugh.easy_steel.events.BowModelEventHandler.setModelProperties(BowModelEventHandler.java:17) ~[EasySteel-NeoForge-1.21.1-1.9.12.jar%23183!/:?] {re:classloading}
	at MC-BOOTSTRAP/net.neoforged.bus/net.neoforged.bus.EventBus.post(EventBus.java:350) ~[bus-8.0.2.jar%23161!/:?] {}
	at MC-BOOTSTRAP/net.neoforged.bus/net.neoforged.bus.EventBus.post(EventBus.java:315) ~[bus-8.0.2.jar%23161!/:?] {}
	at MC-BOOTSTRAP/[email protected]/net.neoforged.fml.ModContainer.acceptEvent(ModContainer.java:158) ~[loader-4.0.24.jar%23159!/:4.0] {}
	at MC-BOOTSTRAP/[email protected]/net.neoforged.fml.ModLoader.lambda$dispatchParallelEvent$4(ModLoader.java:172) ~[loader-4.0.24.jar%23159!/:4.0] {}
	at MC-BOOTSTRAP/[email protected]/net.neoforged.fml.ModLoader.lambda$dispatchParallelTask$7(ModLoader.java:231) ~[loader-4.0.24.jar%23159!/:4.0] {}
	at java.base/java.util.concurrent.CompletableFuture.uniHandle(CompletableFuture.java:934) [?:?] {}
	at java.base/java.util.concurrent.CompletableFuture$UniHandle.tryFire(CompletableFuture.java:911) [?:?] {}
	at java.base/java.util.concurrent.CompletableFuture$Completion.exec(CompletableFuture.java:483) [?:?] {}
	at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:387) [?:?] {}
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1312) [?:?] {}
	at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1843) [?:?] {}
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1808) [?:?] {}
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:188) [?:?] {}