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Bug
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Resolution: Fixed
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Minecraft 17w17b, Minecraft 17w18a
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Confirmed
To reproduce, give yourself a knowledge book with an invalid recipe anywhere inside:
/give @p knowledge_book 1 0 {Recipes:["diamond_pickaxe","example-invalid-recipe"]}
Attempt to use the book. None of the valid recipes inside (if any) will be learned, and the book will appear to have been consumed client-side, but updating the slot (e.g. dropping the item) will reveal it still exists.
Additionally the following fatal error is logged:
17w17b
[18:32:54] [Server thread/FATAL]: Error executing task java.util.concurrent.ExecutionException: java.lang.NullPointerException at java.util.concurrent.FutureTask.report(Unknown Source) ~[?:1.8.0_131] at java.util.concurrent.FutureTask.get(Unknown Source) ~[?:1.8.0_131] at h.a(SourceFile:47) [17w17b.jar:?] at net.minecraft.server.MinecraftServer.D(SourceFile:606) [17w17b.jar:?] at net.minecraft.server.MinecraftServer.C(SourceFile:562) [17w17b.jar:?] at cgc.C(SourceFile:154) [17w17b.jar:?] at net.minecraft.server.MinecraftServer.run(SourceFile:466) [17w17b.jar:?] at java.lang.Thread.run(Unknown Source) [?:1.8.0_131] Caused by: java.lang.NullPointerException at pr.a(SourceFile:34) ~[17w17b.jar:?] at ps.a(SourceFile:25) ~[17w17b.jar:?] at ps.a(SourceFile:32) ~[17w17b.jar:?] at nv.a(SourceFile:909) ~[17w17b.jar:?] at nv.a(SourceFile:919) ~[17w17b.jar:?] at ahv.a(SourceFile:40) ~[17w17b.jar:?] at ahs.a(SourceFile:192) ~[17w17b.jar:?] at nw.a(SourceFile:266) ~[17w17b.jar:?] at of.a(SourceFile:671) ~[17w17b.jar:?] at li.a(SourceFile:32) ~[17w17b.jar:?] at li.a(SourceFile:9) ~[17w17b.jar:?] at hf$1.run(SourceFile:13) ~[17w17b.jar:?] at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:1.8.0_131] at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.8.0_131] at h.a(SourceFile:46) ~[17w17b.jar:?] ... 5 more
- relates to
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- Resolved