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  1. Minecraft: Java Edition
  2. MC-226514

Crash trying to start a world: Error: java.lang.NullPointerException: Cannot read field "u" because "☃" is null

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    Details

    • Type: Bug
    • Status: Resolved
    • Resolution: Fixed
    • Affects Version/s: 1.17 Pre-release 1
    • Fix Version/s: 1.17 Pre-release 3
    • Labels:
      None
    • Environment:
      Windows 10, Java Version 16, etc (info in crash report)
    • Confirmation Status:
      Community Consensus
    • Category:
      Crash
    • Mojang Priority:
      Very Important

      Description

      When trying to load a specific world I have that worked in versions 21w19a and before, I get an error about not being able to read the "u" field.

       

      In single player, it says that it's because "☃" is null, while on multiplayer it says it's because "☃" is null. (Snowman emoji

       

      I saw in the 1.17 Pre Release 1 notes that MC-226192 was fixed and looked very much like this, but sadly this instance of the NullPointerException still happens 1.17-pre1.

       

      I could upload the world file if need be, but the relevant thing to know is that it uses the data pack based custom dimensions features.

        Attachments

        1. latest.log
          5 kB
        2. crash-2021-05-27_11.01.19-client.txt
          10 kB
        3. crash.png
          crash.png
          29 kB
        4. error.png
          error.png
          63 kB

          Issue Links

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              People

              Assignee:
              boq [Mojang] Bartosz Bok
              Reporter:
              doombubbles James Gale
              Votes:
              2 Vote for this issue
              Watchers:
              6 Start watching this issue

                Dates

                Created:
                Updated:
                Resolved:
                CHK: