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  1. Minecraft: Java Edition
  2. MC-116927

Server crashes with "null" as advancement title or description value

    Details

    • Confirmation Status:
      Confirmed

      Description

      The bug

      Setting the title or description of an advancement to null crashes the server.

      Description: Exception in server tick loop
      
      java.lang.NullPointerException: Exception in server tick loop
      	at i.<init>(SourceFile:51)
      	at i$a.a(SourceFile:170)
      	at j.a(SourceFile:65)
      	at ng.a(SourceFile:74)
      	at ng.<init>(SourceFile:66)
      	at ob.b(SourceFile:162)
      	at cgl.a(SourceFile:98)
      	at cgl.j(SourceFile:130)
      	at net.minecraft.server.MinecraftServer.run(SourceFile:436)
      	at java.lang.Thread.run(Unknown Source)
      
      Description: Exception in server tick loop
      
      java.lang.NullPointerException: Exception in server tick loop
      	at gw.a(SourceFile:18)
      	at i.<init>(SourceFile:54)
      	at i$a.a(SourceFile:170)
      	at j.a(SourceFile:65)
      	at ng.a(SourceFile:74)
      	at ng.<init>(SourceFile:66)
      	at ob.b(SourceFile:162)
      	at cgl.a(SourceFile:98)
      	at cgl.j(SourceFile:130)
      	at net.minecraft.server.MinecraftServer.run(SourceFile:436)
      	at java.lang.Thread.run(Unknown Source)
      

      Note: It is likely that MC-87587 and MC-92867 can cause a crash as well.

      How to reproduce

      1. Download the attached advancement title_description_null.json and place it in the following directory of your world folder
        data\advancements\custom
        
      2. Load the world

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              • Assignee:
                dinnerbone [Mojang] Dinnerbone (Nathan Adams)
                Reporter:
                marcono1234 [Helper] Marcono1234
              • Votes:
                1 Vote for this issue
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                1 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved:
                  CHK: