[10:59:11] [Render thread/WARN]: Failed to validate datapack
java.util.concurrent.CompletionException: com.google.gson.JsonParseException: Error loading registry data: Missing value [0] : ResourceKey[minecraft:worldgen/configured_structure_feature / minecraft:fossil]
	at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:314) [?:?]
	at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:319) [?:?]
	at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:718) [?:?]
	at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:478) [?:?]
	at aqu.c(SourceFile:151) [1.17-pre4.jar:?]
	at aqy.c(SourceFile:23) [1.17-pre4.jar:?]
	at aqu.z(SourceFile:125) [1.17-pre4.jar:?]
	at aqu.bq(SourceFile:110) [1.17-pre4.jar:?]
	at dvo.f(SourceFile:1077) [1.17-pre4.jar:?]
	at dvo.e(SourceFile:730) [1.17-pre4.jar:?]
	at net.minecraft.client.main.Main.main(SourceFile:217) [1.17-pre4.jar:?]
Caused by: com.google.gson.JsonParseException: Error loading registry data: Missing value [0] : ResourceKey[minecraft:worldgen/configured_structure_feature / minecraft:fossil]
	at gx.a(SourceFile:221) ~[1.17-pre4.jar:?]
	at java.util.Optional.ifPresent(Optional.java:178) ~[?:?]
	at gx.a(SourceFile:221) ~[1.17-pre4.jar:?]
	at gx.a(SourceFile:212) ~[1.17-pre4.jar:?]
	at wt.a(SourceFile:57) ~[1.17-pre4.jar:?]
	at wt.a(SourceFile:51) ~[1.17-pre4.jar:?]
	at eei.a(SourceFile:319) ~[1.17-pre4.jar:?]
	at eed.a(SourceFile:459) ~[1.17-pre4.jar:?]
	at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:714) ~[?:?]
	... 8 more
[10:59:15] [Render thread/WARN]: Ambiguity between arguments [teleport, location] and [teleport, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[10:59:15] [Render thread/WARN]: Ambiguity between arguments [teleport, location] and [teleport, targets] with inputs: [0.1 -0.5 .9, 0 0 0]
[10:59:15] [Render thread/WARN]: Ambiguity between arguments [teleport, destination] and [teleport, targets] with inputs: [Player, 0123, @e, dd12be42-52a9-4a91-a8a1-11c01849e498]
[10:59:15] [Render thread/WARN]: Ambiguity between arguments [teleport, targets] and [teleport, destination] with inputs: [Player, 0123, dd12be42-52a9-4a91-a8a1-11c01849e498]
[10:59:15] [Render thread/WARN]: Ambiguity between arguments [teleport, targets, location] and [teleport, targets, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[10:59:15] [Render thread/INFO]: Reloading ResourceManager: Default, Server Dimensions 1.17
[10:59:15] [Render thread/INFO]: Loaded 7 recipes
[10:59:15] [Render thread/INFO]: Loaded 1145 advancements
[10:59:15] [Render thread/WARN]: Failed to validate datapack
java.util.concurrent.CompletionException: com.google.gson.JsonParseException: Error loading registry data: Missing value [0] : ResourceKey[minecraft:worldgen/configured_structure_feature / minecraft:fossil]
	at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:314) [?:?]
	at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:319) [?:?]
	at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:718) [?:?]
	at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:478) [?:?]
	at aqu.c(SourceFile:151) [1.17-pre4.jar:?]
	at aqy.c(SourceFile:23) [1.17-pre4.jar:?]
	at aqu.z(SourceFile:125) [1.17-pre4.jar:?]
	at aqu.bq(SourceFile:110) [1.17-pre4.jar:?]
	at dvo.f(SourceFile:1077) [1.17-pre4.jar:?]
	at dvo.e(SourceFile:730) [1.17-pre4.jar:?]
	at net.minecraft.client.main.Main.main(SourceFile:217) [1.17-pre4.jar:?]
Caused by: com.google.gson.JsonParseException: Error loading registry data: Missing value [0] : ResourceKey[minecraft:worldgen/configured_structure_feature / minecraft:fossil]
	at gx.a(SourceFile:221) ~[1.17-pre4.jar:?]
	at java.util.Optional.ifPresent(Optional.java:178) ~[?:?]
	at gx.a(SourceFile:221) ~[1.17-pre4.jar:?]
	at gx.a(SourceFile:212) ~[1.17-pre4.jar:?]
	at wt.a(SourceFile:57) ~[1.17-pre4.jar:?]
	at wt.a(SourceFile:51) ~[1.17-pre4.jar:?]
	at eei.a(SourceFile:319) ~[1.17-pre4.jar:?]
	at eed.a(SourceFile:459) ~[1.17-pre4.jar:?]
	at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:714) ~[?:?]
	... 8 more
[10:59:19] [Render thread/INFO]: Stopping!