MC error

[18:15:02] [main/FATAL]: Unreported exception thrown!
java.util.ConcurrentModificationException: null
	at java.util.LinkedList$LLSpliterator.forEachRemaining(LinkedList.java:1243) ~[?:?]
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) ~[?:?]
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) ~[?:?]
	at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913) ~[?:?]
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:?]
	at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578) ~[?:?]
	at me.shedaniel.rei.gui.widget.ItemListOverlay.processSearchTerm(ItemListOverlay.java:296) ~[RoughlyEnoughItems-2.9.5+build.131.jar:?]
	at me.shedaniel.rei.gui.widget.ItemListOverlay.updateList(ItemListOverlay.java:168) ~[RoughlyEnoughItems-2.9.5+build.131.jar:?]
	at me.shedaniel.rei.gui.ContainerScreenOverlay.init(ContainerScreenOverlay.java:76) ~[RoughlyEnoughItems-2.9.5+build.131.jar:?]
	at me.shedaniel.rei.client.ScreenHelper.getLastOverlay(ScreenHelper.java:48) ~[RoughlyEnoughItems-2.9.5+build.131.jar:?]
	at me.shedaniel.rei.RoughlyEnoughItemsCore.lambda$registerClothEvents$6(RoughlyEnoughItemsCore.java:236) ~[RoughlyEnoughItems-2.9.5+build.131.jar:?]
	at net.minecraft.class_437.handler$onPostInit$zee000(class_437.java:606) ~[intermediary-minecraft-1.14.2-client.jar:?]
	at net.minecraft.class_437.init(class_437.java:331) ~[intermediary-minecraft-1.14.2-client.jar:?]
	at net.minecraft.class_310.method_1507(class_310.java:830) ~[intermediary-minecraft-1.14.2-client.jar:?]
	at net.minecraft.class_310.method_1508(class_310.java:1519) ~[intermediary-minecraft-1.14.2-client.jar:?]
	at net.minecraft.class_310.method_1574(class_310.java:1411) ~[intermediary-minecraft-1.14.2-client.jar:?]
	at net.minecraft.class_310.method_1523(class_310.java:925) ~[intermediary-minecraft-1.14.2-client.jar:?]
	at net.minecraft.class_310.method_1514(class_310.java:411) [intermediary-minecraft-1.14.2-client.jar:?]
	at net.minecraft.client.main.Main.main(Main.java:154) [intermediary-minecraft-1.14.2-client.jar:?]
	at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
	at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:?]
	at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
	at java.lang.reflect.Method.invoke(Method.java:566) ~[?:?]
	at net.fabricmc.loader.game.MinecraftGameProvider.launch(MinecraftGameProvider.java:170) [fabric-loader-0.4.8+build.155.jar:?]
	at net.fabricmc.loader.launch.knot.Knot.init(Knot.java:129) [fabric-loader-0.4.8+build.155.jar:?]
	at net.fabricmc.loader.launch.knot.KnotClient.main(KnotClient.java:26) [fabric-loader-0.4.8+build.155.jar:?]
	at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
	at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:?]
	at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
	at java.lang.reflect.Method.invoke(Method.java:566) ~[?:?]
	at org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:196) [NewLaunch.jar:?]
	at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:231) [NewLaunch.jar:?]
	at org.multimc.EntryPoint.listen(EntryPoint.java:143) [NewLaunch.jar:?]
	at org.multimc.EntryPoint.main(EntryPoint.java:34) [NewLaunch.jar:?]
[18:15:03] [Server thread/INFO]: Stopping server
[18:15:03] [Server thread/INFO]: Saving players
[18:15:03] [Server thread/INFO]: ZigaZG lost connection: Server closed
[18:15:03] [Server thread/INFO]: ZigaZG left the game
[18:15:03] [Server thread/INFO]: Stopping singleplayer server as player logged out
[18:15:03] [Server thread/INFO]: Saving worlds