Like my previous report, It seems to do with missing origin IDs?
I've been messing a lot with my datapack and restructuring a lot of things so namespaces and ID where changing a lot and during that I managed to corrupt 2 of my worlds I assume because of those IDs changing
Here is the errors I get in Game Output:

18:32:07.111
Exception reading /media/cyrox/NVME_SSD/Minecraft/AO_1.17.1/saves/Test World 1.17.1/level.dat
java.lang.NullPointerException: Cannot invoke "net.minecraft.class_1959.method_30970()" because "☃" is null
at net.minecraft.class_3232.method_28917(class_3232.java:143)
at net.minecraft.class_2897.(class_2897.java:27)
at com.mojang.datafixers.util.Either$Left.mapBoth(Either.java:33)
at com.mojang.serialization.DataResult.map(DataResult.java:110)
at com.mojang.serialization.MapDecoder$4.decode(MapDecoder.java:94)
at com.mojang.serialization.MapCodec$1.decode(MapCodec.java:34)
at com.mojang.serialization.codecs.KeyDispatchCodec.lambda$null$1(KeyDispatchCodec.java:67)
at com.mojang.serialization.DataResult.lambda$flatMap$10(DataResult.java:138)
at com.mojang.datafixers.util.Either$Left.map(Either.java:38)
at com.mojang.serialization.DataResult.flatMap(DataResult.java:136)
at com.mojang.serialization.codecs.KeyDispatchCodec.lambda$decode$2(KeyDispatchCodec.java:58)
at com.mojang.serialization.DataResult.lambda$flatMap$10(DataResult.java:138)
at com.mojang.datafixers.util.Either$Left.map(Either.java:38)
at com.mojang.serialization.DataResult.flatMap(DataResult.java:136)
at com.mojang.serialization.codecs.KeyDispatchCodec.decode(KeyDispatchCodec.java:56)
at com.mojang.serialization.MapDecoder.lambda$compressedDecode$0(MapDecoder.java:52)
at com.mojang.serialization.DataResult.lambda$flatMap$10(DataResult.java:138)
at com.mojang.datafixers.util.Either$Left.map(Either.java:38)
at com.mojang.serialization.DataResult.flatMap(DataResult.java:136)
at com.mojang.serialization.MapDecoder.compressedDecode(MapDecoder.java:52)
at com.mojang.serialization.MapCodec$MapCodecCodec.decode(MapCodec.java:91)
at com.mojang.serialization.Decoder.parse(Decoder.java:18)
at com.mojang.serialization.codecs.FieldDecoder.decode(FieldDecoder.java:29)
at com.mojang.serialization.MapCodec$1.decode(MapCodec.java:34)
at com.mojang.serialization.codecs.RecordCodecBuilder$Instance$3.decode(RecordCodecBuilder.java:249)
at com.mojang.serialization.codecs.RecordCodecBuilder$2.decode(RecordCodecBuilder.java:107)
at com.mojang.serialization.MapDecoder.lambda$compressedDecode$0(MapDecoder.java:52)
at com.mojang.serialization.DataResult.lambda$flatMap$10(DataResult.java:138)
at com.mojang.datafixers.util.Either$Left.map(Either.java:38)
at com.mojang.serialization.DataResult.flatMap(DataResult.java:136)
at com.mojang.serialization.MapDecoder.compressedDecode(MapDecoder.java:52)
at com.mojang.serialization.MapCodec$MapCodecCodec.decode(MapCodec.java:91)
at com.mojang.serialization.Decoder.parse(Decoder.java:18)
at com.mojang.serialization.codecs.BaseMapCodec.lambda$decode$2(BaseMapCodec.java:31)
at java.base/java.util.stream.ReduceOps$1ReducingSink.accept(ReduceOps.java:80)
at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)
at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1694)
at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913)
at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.base/java.util.stream.ReferencePipeline.reduce(ReferencePipeline.java:667)
at com.mojang.serialization.codecs.BaseMapCodec.decode(BaseMapCodec.java:27)
at com.mojang.serialization.codecs.UnboundedMapCodec.lambda$decode$0(UnboundedMapCodec.java:38)
at com.mojang.serialization.DataResult.lambda$flatMap$10(DataResult.java:138)
at com.mojang.datafixers.util.Either$Left.map(Either.java:38)
at com.mojang.serialization.DataResult.flatMap(DataResult.java:136)
at com.mojang.serialization.codecs.UnboundedMapCodec.decode(UnboundedMapCodec.java:38)
at com.mojang.serialization.Decoder$2.decode(Decoder.java:63)
at com.mojang.serialization.Codec$2.decode(Codec.java:71)
at net.minecraft.class_5380.decode(class_5380.java:33)
at com.mojang.serialization.Decoder$2.decode(Decoder.java:63)
at com.mojang.serialization.Codec$2.decode(Codec.java:71)
at com.mojang.serialization.Decoder.parse(Decoder.java:18)
at com.mojang.serialization.codecs.FieldDecoder.decode(FieldDecoder.java:29)
at com.mojang.serialization.MapCodec$1.decode(MapCodec.java:34)
at com.mojang.serialization.codecs.RecordCodecBuilder$Instance$5.decode(RecordCodecBuilder.java:324)
at com.mojang.serialization.codecs.RecordCodecBuilder$2.decode(RecordCodecBuilder.java:107)
at com.mojang.serialization.MapDecoder.lambda$compressedDecode$0(MapDecoder.java:52)
at com.mojang.serialization.DataResult.lambda$flatMap$10(DataResult.java:138)
at com.mojang.datafixers.util.Either$Left.map(Either.java:38)
at com.mojang.serialization.DataResult.flatMap(DataResult.java:136)
at com.mojang.serialization.MapDecoder.compressedDecode(MapDecoder.java:52)
at com.mojang.serialization.MapCodec$MapCodecCodec.decode(MapCodec.java:91)
at com.mojang.serialization.Decoder$1.decode(Decoder.java:49)
at com.mojang.serialization.Codec$2.decode(Codec.java:71)
at com.mojang.serialization.Decoder.decode(Decoder.java:22)
at com.mojang.serialization.Decoder.parse(Decoder.java:26)
at net.minecraft.class_32.method_29010(class_32.java:120)
at net.minecraft.class_32.method_29582(class_32.java:224)
at net.minecraft.class_32.method_26998(class_32.java:187)
at net.minecraft.class_32$class_5143.method_27013(class_32.java:341)
at net.minecraft.class_310.method_29599(class_310.java:1925)
at net.minecraft.class_310.method_29604(class_310.java:2155)
at net.minecraft.class_310.method_29610(class_310.java:1999)
at net.minecraft.class_310.method_29606(class_310.java:1939)
at net.minecraft.class_528$class_4272.method_20174(class_528.java:437)
at net.minecraft.class_528$class_4272.method_20164(class_528.java:343)
at net.minecraft.class_528$class_4272.method_25402(class_528.java:274)
at net.minecraft.class_350.method_25402(class_350.java:359)
at net.minecraft.class_4069.method_25402(class_4069.java:27)
at net.minecraft.class_312.method_1611(class_312.java:94)
at net.minecraft.class_437.method_25412(class_437.java:490)
at net.minecraft.class_312.method_1601(class_312.java:94)
at net.minecraft.class_312.method_22686(class_312.java:165)
at net.minecraft.class_1255.execute(class_1255.java:101)
at net.minecraft.class_312.method_22684(class_312.java:165)
at org.lwjgl.glfw.GLFWMouseButtonCallbackI.callback(GLFWMouseButtonCallbackI.java:36)
at org.lwjgl.system.JNI.invokeV(Native Method)
at org.lwjgl.glfw.GLFW.glfwPollEvents(GLFW.java:3101)
at com.mojang.blaze3d.systems.RenderSystem.flipFrame(RenderSystem.java:165)
at net.minecraft.class_1041.method_15998(class_1041.java:310)
at net.minecraft.class_310.method_1523(class_310.java:1137)
at net.minecraft.class_310.method_1514(class_310.java:728)
at net.minecraft.client.main.Main.main(Main.java:217)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at net.fabricmc.loader.game.MinecraftGameProvider.launch(MinecraftGameProvider.java:234)
at net.fabricmc.loader.launch.knot.Knot.launch(Knot.java:153)
at net.fabricmc.loader.launch.knot.KnotClient.main(KnotClient.java:28)
18:32:07.140
Exception reading /media/cyrox/NVME_SSD/Minecraft/AO_1.17.1/saves/Test World 1.17.1/level.dat_old
java.lang.NullPointerException: Cannot invoke "net.minecraft.class_1959.method_30970()" because "☃" is null
at net.minecraft.class_3232.method_28917(class_3232.java:143)
at net.minecraft.class_2897.(class_2897.java:27)
at com.mojang.datafixers.util.Either$Left.mapBoth(Either.java:33)
at com.mojang.serialization.DataResult.map(DataResult.java:110)
at com.mojang.serialization.MapDecoder$4.decode(MapDecoder.java:94)
at com.mojang.serialization.MapCodec$1.decode(MapCodec.java:34)
at com.mojang.serialization.codecs.KeyDispatchCodec.lambda$null$1(KeyDispatchCodec.java:67)
at com.mojang.serialization.DataResult.lambda$flatMap$10(DataResult.java:138)
at com.mojang.datafixers.util.Either$Left.map(Either.java:38)
at com.mojang.serialization.DataResult.flatMap(DataResult.java:136)
at com.mojang.serialization.codecs.KeyDispatchCodec.lambda$decode$2(KeyDispatchCodec.java:58)
at com.mojang.serialization.DataResult.lambda$flatMap$10(DataResult.java:138)
at com.mojang.datafixers.util.Either$Left.map(Either.java:38)
at com.mojang.serialization.DataResult.flatMap(DataResult.java:136)
at com.mojang.serialization.codecs.KeyDispatchCodec.decode(KeyDispatchCodec.java:56)
at com.mojang.serialization.MapDecoder.lambda$compressedDecode$0(MapDecoder.java:52)
at com.mojang.serialization.DataResult.lambda$flatMap$10(DataResult.java:138)
at com.mojang.datafixers.util.Either$Left.map(Either.java:38)
at com.mojang.serialization.DataResult.flatMap(DataResult.java:136)
at com.mojang.serialization.MapDecoder.compressedDecode(MapDecoder.java:52)
at com.mojang.serialization.MapCodec$MapCodecCodec.decode(MapCodec.java:91)
at com.mojang.serialization.Decoder.parse(Decoder.java:18)
at com.mojang.serialization.codecs.FieldDecoder.decode(FieldDecoder.java:29)
at com.mojang.serialization.MapCodec$1.decode(MapCodec.java:34)
at com.mojang.serialization.codecs.RecordCodecBuilder$Instance$3.decode(RecordCodecBuilder.java:249)
at com.mojang.serialization.codecs.RecordCodecBuilder$2.decode(RecordCodecBuilder.java:107)
at com.mojang.serialization.MapDecoder.lambda$compressedDecode$0(MapDecoder.java:52)
at com.mojang.serialization.DataResult.lambda$flatMap$10(DataResult.java:138)
at com.mojang.datafixers.util.Either$Left.map(Either.java:38)
at com.mojang.serialization.DataResult.flatMap(DataResult.java:136)
at com.mojang.serialization.MapDecoder.compressedDecode(MapDecoder.java:52)
at com.mojang.serialization.MapCodec$MapCodecCodec.decode(MapCodec.java:91)
at com.mojang.serialization.Decoder.parse(Decoder.java:18)
at com.mojang.serialization.codecs.BaseMapCodec.lambda$decode$2(BaseMapCodec.java:31)
at java.base/java.util.stream.ReduceOps$1ReducingSink.accept(ReduceOps.java:80)
at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)
at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1694)
at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913)
at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.base/java.util.stream.ReferencePipeline.reduce(ReferencePipeline.java:667)
at com.mojang.serialization.codecs.BaseMapCodec.decode(BaseMapCodec.java:27)
at com.mojang.serialization.codecs.UnboundedMapCodec.lambda$decode$0(UnboundedMapCodec.java:38)
at com.mojang.serialization.DataResult.lambda$flatMap$10(DataResult.java:138)
at com.mojang.datafixers.util.Either$Left.map(Either.java:38)
at com.mojang.serialization.DataResult.flatMap(DataResult.java:136)
at com.mojang.serialization.codecs.UnboundedMapCodec.decode(UnboundedMapCodec.java:38)
at com.mojang.serialization.Decoder$2.decode(Decoder.java:63)
at com.mojang.serialization.Codec$2.decode(Codec.java:71)
at net.minecraft.class_5380.decode(class_5380.java:33)
at com.mojang.serialization.Decoder$2.decode(Decoder.java:63)
at com.mojang.serialization.Codec$2.decode(Codec.java:71)
at com.mojang.serialization.Decoder.parse(Decoder.java:18)
at com.mojang.serialization.codecs.FieldDecoder.decode(FieldDecoder.java:29)
at com.mojang.serialization.MapCodec$1.decode(MapCodec.java:34)
at com.mojang.serialization.codecs.RecordCodecBuilder$Instance$5.decode(RecordCodecBuilder.java:324)
at com.mojang.serialization.codecs.RecordCodecBuilder$2.decode(RecordCodecBuilder.java:107)
at com.mojang.serialization.MapDecoder.lambda$compressedDecode$0(MapDecoder.java:52)
at com.mojang.serialization.DataResult.lambda$flatMap$10(DataResult.java:138)
at com.mojang.datafixers.util.Either$Left.map(Either.java:38)
at com.mojang.serialization.DataResult.flatMap(DataResult.java:136)
at com.mojang.serialization.MapDecoder.compressedDecode(MapDecoder.java:52)
at com.mojang.serialization.MapCodec$MapCodecCodec.decode(MapCodec.java:91)
at com.mojang.serialization.Decoder$1.decode(Decoder.java:49)
at com.mojang.serialization.Codec$2.decode(Codec.java:71)
at com.mojang.serialization.Decoder.decode(Decoder.java:22)
at com.mojang.serialization.Decoder.parse(Decoder.java:26)
at net.minecraft.class_32.method_29010(class_32.java:120)
at net.minecraft.class_32.method_29582(class_32.java:224)
at net.minecraft.class_32.method_26998(class_32.java:195)
at net.minecraft.class_32$class_5143.method_27013(class_32.java:341)
at net.minecraft.class_310.method_29599(class_310.java:1925)
at net.minecraft.class_310.method_29604(class_310.java:2155)
at net.minecraft.class_310.method_29610(class_310.java:1999)
at net.minecraft.class_310.method_29606(class_310.java:1939)
at net.minecraft.class_528$class_4272.method_20174(class_528.java:437)
at net.minecraft.class_528$class_4272.method_20164(class_528.java:343)
at net.minecraft.class_528$class_4272.method_25402(class_528.java:274)
at net.minecraft.class_350.method_25402(class_350.java:359)
at net.minecraft.class_4069.method_25402(class_4069.java:27)
at net.minecraft.class_312.method_1611(class_312.java:94)
at net.minecraft.class_437.method_25412(class_437.java:490)
at net.minecraft.class_312.method_1601(class_312.java:94)
at net.minecraft.class_312.method_22686(class_312.java:165)
at net.minecraft.class_1255.execute(class_1255.java:101)
at net.minecraft.class_312.method_22684(class_312.java:165)
at org.lwjgl.glfw.GLFWMouseButtonCallbackI.callback(GLFWMouseButtonCallbackI.java:36)
at org.lwjgl.system.JNI.invokeV(Native Method)
at org.lwjgl.glfw.GLFW.glfwPollEvents(GLFW.java:3101)
at com.mojang.blaze3d.systems.RenderSystem.flipFrame(RenderSystem.java:165)
at net.minecraft.class_1041.method_15998(class_1041.java:310)
at net.minecraft.class_310.method_1523(class_310.java:1137)
at net.minecraft.class_310.method_1514(class_310.java:728)
at net.minecraft.client.main.Main.main(Main.java:217)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at net.fabricmc.loader.game.MinecraftGameProvider.launch(MinecraftGameProvider.java:234)
at net.fabricmc.loader.launch.knot.Knot.launch(Knot.java:153)
at net.fabricmc.loader.launch.knot.KnotClient.main(KnotClient.java:28)
18:32:07.144
Failed to load datapacks, can't proceed with server load
java.lang.IllegalStateException: Failed to load world
at net.minecraft.class_310.method_29599(class_310.java:1927)
at net.minecraft.class_310.method_29604(class_310.java:2155)
at net.minecraft.class_310.method_29610(class_310.java:1999)
at net.minecraft.class_310.method_29606(class_310.java:1939)
at net.minecraft.class_528$class_4272.method_20174(class_528.java:437)
at net.minecraft.class_528$class_4272.method_20164(class_528.java:343)
at net.minecraft.class_528$class_4272.method_25402(class_528.java:274)
at net.minecraft.class_350.method_25402(class_350.java:359)
at net.minecraft.class_4069.method_25402(class_4069.java:27)
at net.minecraft.class_312.method_1611(class_312.java:94)
at net.minecraft.class_437.method_25412(class_437.java:490)
at net.minecraft.class_312.method_1601(class_312.java:94)
at net.minecraft.class_312.method_22686(class_312.java:165)
at net.minecraft.class_1255.execute(class_1255.java:101)
at net.minecraft.class_312.method_22684(class_312.java:165)
at org.lwjgl.glfw.GLFWMouseButtonCallbackI.callback(GLFWMouseButtonCallbackI.java:36)
at org.lwjgl.system.JNI.invokeV(Native Method)
at org.lwjgl.glfw.GLFW.glfwPollEvents(GLFW.java:3101)
at com.mojang.blaze3d.systems.RenderSystem.flipFrame(RenderSystem.java:165)
at net.minecraft.class_1041.method_15998(class_1041.java:310)
at net.minecraft.class_310.method_1523(class_310.java:1137)
at net.minecraft.class_310.method_1514(class_310.java:728)
at net.minecraft.client.main.Main.main(Main.java:217)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at net.fabricmc.loader.game.MinecraftGameProvider.launch(MinecraftGameProvider.java:234)
at net.fabricmc.loader.launch.knot.Knot.launch(Knot.java:153)
at net.fabricmc.loader.launch.knot.KnotClient.main(KnotClient.java:28)