stat: path should be string, bytes, os.PathLike or integer, not NoneType

[griffi-gh]

Platform

Operating system and version: NixOS unstable (c53e65ec92f38d30e3c14f8d628ab55d462947aa)
Legendary version (legendary -V): legendary version "0.20.34", codename "Direct Intervention"

Expected Behavior

Update should complete without producing errors

Current Behavior

After the update is complete, Legendary fails with the following error:

[DLManager] INFO: = Progress: 100.00% (11274/11274), Running for 00:12:37, ETA: 00:00:00
[DLManager] INFO:  - Downloaded: 8144.82 MiB, Written: 10441.39 MiB
[DLManager] INFO:  - Cache usage: 0.00 MiB, active tasks: 0
[DLManager] INFO:  + Download   - 4.95 MiB/s (raw) / 5.00 MiB/s (decompressed)
[DLManager] INFO:  + Disk       - 5.45 MiB/s (write) / 0.00 MiB/s (read)
[DLManager] INFO: Waiting for installation to finish...
[DLManager] INFO: All done! Download manager quitting...
[cli] INFO: Deleting now untagged files.
[cli] INFO: Finished installation process in 758.88 seconds.
Traceback (most recent call last):
  File "/nix/store/4794qc90sra38053vrbyk7437yilfb3n-legendary-gl-0.20.34/bin/.legendary-wrapped", line 9, in <module>
    sys.exit(main())
             ~~~~^^
  File "/nix/store/4794qc90sra38053vrbyk7437yilfb3n-legendary-gl-0.20.34/lib/python3.13/site-packages/legendary/cli.py", line 3066, in main
    cli.install_game(args)
    ~~~~~~~~~~~~~~~~^^^^^^
  File "/nix/store/4794qc90sra38053vrbyk7437yilfb3n-legendary-gl-0.20.34/lib/python3.13/site-packages/legendary/cli.py", line 1102, in install_game
    if old_igame and args.repair_mode and os.path.exists(repair_file):
                                          ~~~~~~~~~~~~~~^^^^^^^^^^^^^
  File "<frozen genericpath>", line 19, in exists
TypeError: stat: path should be string, bytes, os.PathLike or integer, not NoneType

Steps to Reproduce

Try to update Fortnite and agree to updating Fortnite_Studio DLC (aka Unreal Editor for Fortnite):

legendary update Fortnite

Or update Fortnite_Studio directly:

legendary update Fortnite_Studio

This error occurs after every single recent Unreal Editor update.

Additional information

• Game is installed to an NTFS partition

• Result of Legendary list-installed subcommand

❯ legendary list-installed

Installed games:
 * Fortnite (App name: Fortnite | Version: ++Fortnite+Release-37.51-CL-46968237-Windows | Platform: Windows | 0.30 GiB)
  + Unreal Editor for Fortnite (App name: Fortnite_Studio | Version: ++Fortnite+Release-37.51-CL-46968237-Windows) | 10.71 GiB)

Total: 1

nix-env --version

❯ nix-env --version
nix-env (Lix, like Nix) 2.93.3
System type: x86_64-linux
Additional system types: i686-linux, x86_64-v1-linux, x86_64-v2-linux, x86_64-v3-linux, x86_64-v4-linux
Features: gc, signed-caches
System configuration file: /etc/nix/nix.conf
User configuration files: /home/user/.config/nix/nix.conf:/nix/store/4albkh39zmj8l2ry2k63nd07k1rxvrz6-plasma-workspace-6.4.5/etc/xdg/nix/nix.conf:/nix/store/vn7cqrkf9bpy2c6k8zly1swcpa7yvky9-kglobalacceld-6.4.5/etc/xdg/nix/nix.conf:/nix/store/733kipy3lrla6ym7vkxzyxmr4q73ngh2-baloo-6.19.0/etc/xdg/nix/nix.conf:/home/user/.config/kdedefaults/nix/nix.conf:/nix/store/4albkh39zmj8l2ry2k63nd07k1rxvrz6-plasma-workspace-6.4.5/etc/xdg/nix/nix.conf:/nix/store/vn7cqrkf9bpy2c6k8zly1swcpa7yvky9-kglobalacceld-6.4.5/etc/xdg/nix/nix.conf:/nix/store/733kipy3lrla6ym7vkxzyxmr4q73ngh2-baloo-6.19.0/etc/xdg/nix/nix.conf:/home/user/.config/kdedefaults/nix/nix.conf:/etc/xdg/nix/nix.conf:/home/user/.local/share/flatpak/exports/etc/xdg/nix/nix.conf:/var/lib/flatpak/exports/etc/xdg/nix/nix.conf:/home/user/.nix-profile/etc/xdg/nix/nix.conf:/nix/profile/etc/xdg/nix/nix.conf:/home/user/.local/state/nix/profile/etc/xdg/nix/nix.conf:/etc/profiles/per-user/user/etc/xdg/nix/nix.conf:/nix/var/nix/profiles/default/etc/xdg/nix/nix.conf:/run/current-system/sw/etc/xdg/nix/nix.conf
Store directory: /nix/store
State directory: /nix/var/nix
Data directory: /nix/store/zxl9ivn2v7xcrzlf4j036fl6av34zwv9-lix-2.93.3/share

infi -F

System:
  Host: fw13 Kernel: 6.17.2 arch: x86_64 bits: 64
  Desktop: KDE Plasma v: 6.4.5 Distro: NixOS 25.11 (Xantusia)
Machine:
  Type: Laptop System: Framework product: Laptop 13 (AMD Ryzen 7040Series)
    v: A5 serial: <superuser required>
  Mobo: Framework model: FRANMDCP05 v: A5 serial: <superuser required>
    UEFI: INSYDE v: 03.16 date: 07/25/2025
Battery:
  ID-1: BAT1 charge: 26.6 Wh (52.9%) condition: 50.2/55 Wh (91.3%) volts: 15.1
    min: 15.4
CPU:
  Info: 6-core model: AMD Ryzen 5 7640U w/ Radeon 760M Graphics bits: 64
    type: MT MCP cache: L2: 6 MiB
  Speed (MHz): avg: 1397 min/max: 406/3501 cores: 1: 1397 2: 1397 3: 1397
    4: 1397 5: 1397 6: 1397 7: 1397 8: 1397 9: 1397 10: 1397 11: 1397 12: 1397
Graphics:
  Device-1: Advanced Micro Devices [AMD/ATI] Phoenix1 driver: amdgpu v: kernel
  Display: wayland server: X.org v: 1.21.1.18 with: Xwayland v: 24.1.8
    compositor: kwin_wayland driver: gpu: amdgpu resolution: 2256x1504~60Hz
  API: EGL v: 1.5 drivers: kms_swrast,radeonsi,swrast
    platforms: gbm,wayland,x11,surfaceless,device
  API: OpenGL v: 4.6 compat-v: 4.5 vendor: amd mesa v: 25.2.4 renderer: AMD
    Radeon 760M Graphics (radeonsi phoenix LLVM 21.1.1 DRM 3.64 6.17.2)
  API: Vulkan v: 1.4.321 drivers: radv,llvmpipe surfaces: N/A
  Info: Tools: api: eglinfo, glxinfo, vulkaninfo
    de: kscreen-console,kscreen-doctor gpu: amdgpu_top x11: xprop,xrandr
Audio:
  Device-1: Advanced Micro Devices [AMD/ATI] Radeon High Definition Audio
    [Rembrandt/Strix] driver: snd_hda_intel
  Device-2: Advanced Micro Devices [AMD] Audio Coprocessor
    driver: snd_pci_ps
  Device-3: Advanced Micro Devices [AMD] Family 17h/19h/1ah HD Audio
    driver: snd_hda_intel
  API: ALSA v: k6.17.2 status: kernel-api
  Server-1: PipeWire v: 1.4.8 status: active
Network:
  Device-1: MEDIATEK MT7922 802.11ax PCI Express Wireless Network Adapter
    driver: mt7921e
  IF: wlan0 state: up mac: ec:91:61:b7:c1:11
  IF-ID-1: tailscale0 state: unknown speed: -1 duplex: full mac: N/A
Bluetooth:
  Device-1: MediaTek Wireless_Device driver: btusb type: USB
  Report: hciconfig ID: hci0 state: up address: EC:91:61:B7:C1:12 bt-v: 5.3
Drives:
  Local Storage: total: 931.51 GiB used: 516.82 GiB (55.5%)
  ID-1: /dev/nvme0n1 vendor: Kingston model: SNV3S1000G size: 931.51 GiB
Partition:
  ID-1: / size: 705.18 GiB used: 371.51 GiB (52.7%) fs: btrfs dev: /dev/dm-2
  ID-2: /boot size: 1022 MiB used: 398.7 MiB (39.0%) fs: vfat
    dev: /dev/nvme0n1p1
  ID-3: /home size: 705.18 GiB used: 371.51 GiB (52.7%) fs: btrfs
    dev: /dev/dm-2
Swap:
  ID-1: swap-1 type: partition size: 30 GiB used: 1.85 GiB (6.2%)
    dev: /dev/dm-1
Sensors:
  System Temperatures: cpu: 57.9 C mobo: N/A gpu: amdgpu temp: 56.0 C
  Fan Speeds (rpm): fan-1: 1876
Info:
  Memory: total: 24 GiB note: est. available: 22.79 GiB used: 6.33 GiB (27.8%)
  Processes: 391 Uptime: 22h 35m Shell: fish inxi: 3.3.39