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  1. Minecraft: Java Edition
  2. MC-229887

"Unable to create a jar-filesystem" warning logged upon starting the game

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Details

    • Bug
    • Status: Resolved
    • Resolution: Fixed
    • 1.17.1 Pre-release 1
    • 1.17.1 Pre-release 3
    • None
    • Confirmed
    • Save Data
    • Normal

    Description

      The bug

      Upon starting Minecraft in version 1.17.1 Pre-release 1, the following warning is logged in my game log.

      Unable to create a jar-filesystem for: jar:file:/Users/user/Library/Application%20Support/minecraft/versions/1.17.1-pre1/1.17.1-pre1.jar!/assets/.mcassetsroot: java.nio.file.FileSystemNotFoundException

      acy is shown in the second column of the launcher log window.

      This wasn't an issue in 1.17.

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            boq [Mojang] Bartosz Bok
            markderickson [Helper] markderickson
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            Dates

              Created:
              Updated:
              Resolved:
              CHK: