PaperMC error after upgrade to version 26.1.2

Troubleshooting
1

Creating a bug report/issue

I have searched the existing open and closed issues

Required Information

  • DietPi version | cat /boot/dietpi/.version

    • G_DIETPI_VERSION_CORE=10
      G_DIETPI_VERSION_SUB=3
      G_DIETPI_VERSION_RC=3
      G_GITBRANCH=‘master’
      G_GITOWNER=‘MichaIng’
      G_LIVE_PATCH_STATUS[0]=‘applied’
      G_LIVE_PATCH_STATUS[1]=‘applied’
      G_LIVE_PATCH_STATUS[2]=‘applied’

    Distro version | echo $G_DISTRO_NAME $G_RASPBIAN

    • trixie

    Kernel version | uname --all

    • Linux DietTower 6.12.85+deb13-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.85-1 (2026-04-30) x86_64 GNU/Linux

  • Architecture | dpkg --print-architecture

    • amd64

  • SBC model | echo $G_HW_MODEL_NAME or (EG: RPi3)

    • Native PC (x86_64)

    Power supply used | (EG: 5V 1A RAVpower)

    • standard pc 500w

  • SD card used | (EG: SanDisk ultra)

    • nvme ssd

Additional Information (if applicable)

  • Software title | (EG: Nextcloud)
    • PaperMC
  • Was the software title installed freshly or updated/migrated?
    • updated to version 26.1.2
  • Can this issue be replicated on a fresh installation of DietPi?
    • not tested
      ← If you sent a “dietpi-bugreport”, please paste the ID here →
  • Bug report ID | echo $G_HW_UUID

Steps to reproduce

update papermc via dietpi-software reinstall 181

systemctl status papermc
○ papermc.service - PaperMC (DietPi)
      Loaded: loaded (/etc/systemd/system/papermc.service; enabled; preset: enabled)
     Drop-In: /etc/systemd/system/papermc.service.d
              └─dietpi-services_edit.conf
      Active: inactive (dead) since Mon 2026-05-11 18:39:48 CEST; 2s ago
    Duration: 4.213s
  Invocation: 2f42b8b6e5214467beacb9a89df9d1e6
        Docs: https://paper.readthedocs.io/
     Process: 2333157 ExecStart=/usr/lib/jvm/temurin-21-jre-amd64/bin/java -mx1373m -jar /opt/papermc/paperclip.jar --nogui --noconsole (code=exited, status=0/SUCCESS)
    Main PID: 2333157 (code=exited, status=0/SUCCESS)
    Mem peak: 374.9M
         CPU: 2.115s
Mai 11 18:39:48 DietTower PaperMC\[2333157\]: at java.base/java.net.URLClassLoader.findClass(Unknown Source)
Mai 11 18:39:48 DietTower PaperMC\[2333157\]: at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
Mai 11 18:39:48 DietTower PaperMC\[2333157\]: at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
Mai 11 18:39:48 DietTower PaperMC\[2333157\]: at java.base/java.lang.Class.forName0(Native Method)
Mai 11 18:39:48 DietTower PaperMC\[2333157\]: at java.base/java.lang.Class.forName(Unknown Source)
Mai 11 18:39:48 DietTower PaperMC\[2333157\]: at java.base/java.lang.Class.forName(Unknown Source)
Mai 11 18:39:48 DietTower PaperMC\[2333157\]: at io.papermc.paperclip.Paperclip.lambda$main$0(Paperclip.java:38)
Mai 11 18:39:48 DietTower PaperMC\[2333157\]: at java.base/java.lang.Thread.run(Unknown Source)
Mai 11 18:39:48 DietTower systemd\[1\]: papermc.service: Deactivated successfully.
Mai 11 18:39:48 DietTower systemd\[1\]: papermc.service: Consumed 2.115s CPU time, 374.9M memory peak.

Expected behaviour

  • papermc start as normal

Actual behaviour

  • papermc does not start
    • needs java version 25, but only version 21 is installed

Extra details

  • …
2

can you share the entire service log

journalctl -u papermc
3

Yes, version 26 needs not Java 25 (Getting started | PaperMC Docs)
But I’m not even able to update to version 26:

 Step: Installing PaperMC: Highly optimised Minecraft server with plugins, written in Java

[FAILED] DietPi-Software | Automatic latest PaperMC download URL detection failed.
[FAILED] DietPi-Software | "https://fill-data.papermc.io/v1/objects/da497e12b43e5b61c5df150e4bfd0de0f53043e57d2ac98dd59289ee9da4ad68/paper-1.21.11-127.jar" will be used as fallback, but a newer version might be available.
[FAILED] DietPi-Software | Please report this at: https://github.com/MichaIng/DietPi/issues
[  OK  ] DietPi-Software | cd /tmp/DietPi-Software
[  OK  ] DietPi-Software | curl -sSfL https://fill-data.papermc.io/v1/objects/da497e12b43e5b61c5df150e4bfd0de0f53043e57d2ac98dd59289ee9da4ad68/paper-1.21.11-127.jar -o paper-1.21.11-127.jar
[  OK  ] DietPi-Software | mv paper-1.21.11-127.jar /opt/papermc/paperclip.jar