Planescape Torment installation aborts with return code 256

I tried to install Planescape Torment Enhanced Edition, but after extracting all the game files the installer aborts with error code 256 for no visible reason.

I searched the forums and found some other issues like that, but all of them had something to do with wine. But since this game here is available natively for Linux, wine is not involved at all.

Manually installing the game with the provided .sh file from GOG works fine and the game itself also works fine. For what I am seeing, there seems to be no real technical reason for lutris to stop the installation in the first place.

Any suggestions?

System information: https://paste.ubuntu.com/p/XnRvwMmkXC/

Output of lutris -d: (I replaced my username with MYUSERNAME)

~ lutris -d
INFO     2022-06-13 17:42:44,218 [startup.init_lutris:173]:Starting Lutris 0.5.10.1
WARNING  2022-06-13 17:42:44,246 [libretro.get_libretro_cores:24]:No folder at /home/MYUSERNAME/.local/share/lutris/runners/retroarch/
INFO     2022-06-13 17:42:44,274 [startup.check_driver:65]:Running AMD Mesa driver 22.1.1 on AMD Radeon RX 5700 XT (navi10, LLVM 13.0.1, DRM 3.46, 5.18.3-1-MANJARO) (0x731f)
INFO     2022-06-13 17:42:44,274 [startup.check_driver:77]:GPU: 1002:731F 148C:2398 (amdgpu drivers)
INFO     2022-06-13 17:42:44,348 [startup.update_runtime:213]:Startup complete
DEBUG    2022-06-13 17:42:44,415 [lutriswindow.update_store:437]:Showing 27 games
DEBUG    2022-06-13 17:42:47,498 [base.install:210]:Installing 1132393016 from service gog
DEBUG    2022-06-13 17:42:47,498 [http.get:83]:GET https://lutris.net/api/games/service/gog
DEBUG    2022-06-13 17:42:47,663 [api.get_game_installers:160]:Fetching installer https://lutris.net/api/installers/planescape-torment
DEBUG    2022-06-13 17:42:47,664 [http.get:83]:GET https://lutris.net/api/installers/planescape-torment
DEBUG    2022-06-13 17:42:47,971 [application.show_window:332]:Showing window InstallerWindow1132393016
DEBUG    2022-06-13 17:42:54,554 [displayconfig.get_current_resolution:624]:Retrieving current resolution
DEBUG    2022-06-13 17:42:56,038 [interpreter.get_extras:159]:Checking if service provide extra files
DEBUG    2022-06-13 17:42:56,038 [gog.get_extras:326]:Download extras for GOG ID 1132393016 and its DLCs
INFO     2022-06-13 17:42:56,038 [gog.get_game_details:292]:Getting game details for 1132393016
DEBUG    2022-06-13 17:42:56,039 [http.get:83]:GET https://api.gog.com/products/1132393016?expand=downloads&locale=de-DE
ERROR    2022-06-13 17:42:56,152 [gog.make_api_request:234]:Failed to request https://api.gog.com/products/1132393016?expand=downloads&locale=de-DE, check your GOG credentials and internet connectivity
WARNING  2022-06-13 17:42:56,153 [gog.get_extras:329]:Unable to get GOG data for game 1132393016
DEBUG    2022-06-13 17:42:56,153 [http.get:83]:GET https://embed.gog.com/userData.json
INFO     2022-06-13 17:42:56,365 [installer.prepare_game_files:155]:Getting files for game
INFO     2022-06-13 17:42:56,365 [installer.prepare_game_files:157]:Adding selected extras to downloads
INFO     2022-06-13 17:42:56,365 [gog.get_game_details:292]:Getting game details for 1132393016
DEBUG    2022-06-13 17:42:56,365 [http.get:83]:GET https://api.gog.com/products/1132393016?expand=downloads&locale=de-DE
ERROR    2022-06-13 17:42:56,445 [gog.make_api_request:234]:Failed to request https://api.gog.com/products/1132393016?expand=downloads&locale=de-DE, check your GOG credentials and internet connectivity
WARNING  2022-06-13 17:42:56,446 [gog.get_downloads:320]:Unable to get GOG data for game 1132393016
DEBUG    2022-06-13 17:42:56,446 [installer.prepare_game_files:168]:Unable to get files from service. Setting game to manual.
INFO     2022-06-13 17:42:56,450 [files_box.check_files_ready:72]:Waiting for user to provide files
DEBUG    2022-06-13 17:42:56,453 [interpreter.create_game_folder:181]:Creating destination path /mnt/SSD_4TB/lutris/gog/planescape-torment
DEBUG    2022-06-13 17:43:09,343 [files_box.on_file_available:93]:game is available
DEBUG    2022-06-13 17:43:22,167 [cache.save_to_cache:35]:Cached /mnt/NAS_home/Downloads/gog/Planescape Torment/planescape_torment_enhanced_edition_3_1_4_26532.sh to /mnt/SSD_4TB/lutris/.cache/planescape-torment/game
DEBUG    2022-06-13 17:43:22,169 [downloader.start:65]:⬇ http://lutris.net/files/tools/unzip.tar.gz
DEBUG    2022-06-13 17:43:22,171 [downloader.start:65]:⬇ https://lutris.net/files/runners/gemrb-0.8.1-x64.tar.gz
DEBUG    2022-06-13 17:43:22,430 [downloader.download_cb:125]:Finished downloading https://lutris.net/files/runners/gemrb-0.8.1-x64.tar.gz
DEBUG    2022-06-13 17:43:22,460 [downloader.download_cb:125]:Finished downloading http://lutris.net/files/tools/unzip.tar.gz
INFO     2022-06-13 17:43:22,669 [file_box.on_download_complete:252]:Download completed
INFO     2022-06-13 17:43:22,670 [cache.save_to_cache:28]:Skipping caching of /mnt/SSD_4TB/lutris/.cache/planescape-torment/unzip/unzip.tar.gz, already cached in /mnt/SSD_4TB/lutris/.cache/planescape-torment/unzip
DEBUG    2022-06-13 17:43:22,670 [files_box.on_file_available:93]:unzip is available
INFO     2022-06-13 17:43:22,672 [file_box.on_download_complete:252]:Download completed
INFO     2022-06-13 17:43:22,672 [cache.save_to_cache:28]:Skipping caching of /mnt/SSD_4TB/lutris/.cache/planescape-torment/gemrbengine/gemrb-0.8.1-x64.tar.gz, already cached in /mnt/SSD_4TB/lutris/.cache/planescape-torment/gemrbengine
DEBUG    2022-06-13 17:43:22,673 [files_box.on_file_available:93]:gemrbengine is available
INFO     2022-06-13 17:43:22,673 [files_box.on_file_available:99]:All files available
INFO     2022-06-13 17:43:22,673 [installerwindow.on_files_available:463]:All files are available, continuing install
DEBUG    2022-06-13 17:43:22,674 [interpreter._iter_commands:317]:Installer command: {'input_menu': {'id': 'FOLDER', 'options': [{'Planescape Torment': 'English'}, {'Planescape Torment (German)': 'Deutsch'}, {'Planescape Torment (French)': 'Français'}, {'Planescape Torment (Polish)': 'Polski'}]}}
/usr/lib/python3.10/site-packages/gi/overrides/GObject.py:493: Warning: ../glib/gobject/gsignal.c:2731: instance '0x55e46a429500' has no handler with id '14336'
  return func(*args, **kwargs)
DEBUG    2022-06-13 17:43:27,619 [interpreter._iter_commands:317]:Installer command: {'extract': {'dst': '$CACHE', 'file': '$unzip'}}
DEBUG    2022-06-13 17:43:27,621 [commands.extract:193]:Entpacke unzip.tar.gz
DEBUG    2022-06-13 17:43:27,621 [commands.extract:197]:extracting file /mnt/SSD_4TB/lutris/.cache/planescape-torment/unzip/unzip.tar.gz to /home/MYUSERNAME/.cache/lutris/installer/planescape-torment
DEBUG    2022-06-13 17:43:27,631 [extract.extract_archive:123]:Extracting /mnt/SSD_4TB/lutris/.cache/planescape-torment/unzip/unzip.tar.gz to /home/MYUSERNAME/.cache/lutris/installer/planescape-torment
DEBUG    2022-06-13 17:43:27,634 [extract.extract_archive:175]:Finished extracting /mnt/SSD_4TB/lutris/.cache/planescape-torment/unzip/unzip.tar.gz to /home/MYUSERNAME/.cache/lutris/installer/planescape-torment
DEBUG    2022-06-13 17:43:27,634 [commands._killable_process:552]:Process <function extract_archive at 0x7f5c353e0550> returned: ('/mnt/SSD_4TB/lutris/.cache/planescape-torment/unzip/unzip.tar.gz', '/home/MYUSERNAME/.cache/lutris/installer/planescape-torment')
DEBUG    2022-06-13 17:43:27,637 [commands.extract:199]:Extract done
DEBUG    2022-06-13 17:43:27,637 [interpreter._iter_commands:317]:Installer command: {'execute': {'args': '$game -d "$GAMEDIR/tmp" "data/noarch/*"', 'file': '$CACHE/unzip'}}
DEBUG    2022-06-13 17:43:27,639 [command.start:141]:LD_LIBRARY_PATH="/home/MYUSERNAME/.local/share/lutris/runtime/Ubuntu-18.04-i686:/home/MYUSERNAME/.local/share/lutris/runtime/steam/i386/lib/i386-linux-gnu:/home/MYUSERNAME/.local/share/lutris/runtime/steam/i386/lib:/home/MYUSERNAME/.local/share/lutris/runtime/steam/i386/usr/lib/i386-linux-gnu:/home/MYUSERNAME/.local/share/lutris/runtime/steam/i386/usr/lib:/home/MYUSERNAME/.local/share/lutris/runtime/Ubuntu-18.04-x86_64:/home/MYUSERNAME/.local/share/lutris/runtime/steam/amd64/lib/x86_64-linux-gnu:/home/MYUSERNAME/.local/share/lutris/runtime/steam/amd64/lib:/home/MYUSERNAME/.local/share/lutris/runtime/steam/amd64/usr/lib/x86_64-linux-gnu:/home/MYUSERNAME/.local/share/lutris/runtime/steam/amd64/usr/lib"
DEBUG    2022-06-13 17:43:27,639 [command.start:141]:PATH="/home/MYUSERNAME/.local/share/lutris/runtime/network-tools:/home/MYUSERNAME/.local/bin:/usr/local/bin:/usr/bin:/var/lib/snapd/snap/bin:/usr/local/sbin:/opt/cuda/bin:/opt/cuda/nsight_compute:/opt/cuda/nsight_systems/bin:/var/lib/flatpak/exports/bin:/usr/lib/jvm/default/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl"
DEBUG    2022-06-13 17:43:27,639 [command.start:141]:PYTHONPATH="/usr/lib/lutris:/usr/bin:/usr/lib/python310.zip:/usr/lib/python3.10:/usr/lib/python3.10/lib-dynload:/home/MYUSERNAME/.local/lib/python3.10/site-packages:/usr/lib/python3.10/site-packages"
DEBUG    2022-06-13 17:43:27,639 [command.start:141]:LUTRIS_GAME_UUID="2d24049c-8e65-4006-acfb-331926289551"
Started initial process 312007 from /home/MYUSERNAME/.cache/lutris/installer/planescape-torment/unzip /mnt/NAS_home/Downloads/gog/Planescape Torment/planescape_torment_enhanced_edition_3_1_4_26532.sh -d /mnt/SSD_4TB/lutris/gog/planescape-torment/tmp data/noarch/*
Start monitoring process.
Archive:  /mnt/NAS_home/Downloads/gog/Planescape Torment/planescape_torment_enhanced_edition_3_1_4_26532.sh
warning [/mnt/NAS_home/Downloads/gog/Planescape Torment/planescape_torment_enhanced_edition_3_1_4_26532.sh]:  790431 extra bytes at beginning or within zipfile
  (attempting to process anyway)
   creating: /mnt/SSD_4TB/lutris/gog/planescape-torment/tmp/data/noarch/
   creating: /mnt/SSD_4TB/lutris/gog/planescape-torment/tmp/data/noarch/support/
  inflating: /mnt/SSD_4TB/lutris/gog/planescape-torment/tmp/data/noarch/support/preuninst.sh  
---[Inflating the game files goes here, I had to strip it out because of character limit. There were no errors in extracting the game files]
  inflating: /mnt/SSD_4TB/lutris/gog/planescape-torment/tmp/data/noarch/game/Torment64  
  inflating: /mnt/SSD_4TB/lutris/gog/planescape-torment/tmp/data/noarch/game/Torment  
  inflating: /mnt/SSD_4TB/lutris/gog/planescape-torment/tmp/data/noarch/start.sh  
Monitored process exited.
Initial process has exited (return code: 256)
All processes have quit
Exit with return code 256
DEBUG    2022-06-13 17:43:41,341 [command.on_stop:195]:Process 312001 has terminated with code 256
DEBUG    2022-06-13 17:43:41,647 [commands._monitor_task:449]:Return code: 256
ERROR    2022-06-13 17:43:41,648 [errors.__init__:18]:Befehl beendet mit dem Code 256
None
INFO     2022-06-13 17:45:27,408 [interpreter.revert:374]:Cancelling installation of Planescape: Torment
DEBUG    2022-06-13 17:45:27,408 [system.remove_folder:229]:Removing folder /mnt/SSD_4TB/lutris/gog/planescape-torment
DEBUG    2022-06-13 17:45:27,536 [system.remove_folder:229]:Removing folder /home/MYUSERNAME/.cache/lutris/installer/planescape-torment
DEBUG    2022-06-13 17:45:27,537 [application.on_app_window_destroyed:350]:Removed window InstallerWindow1132393016
INFO     2022-06-13 17:45:35,082 [application.do_shutdown:885]:Shutting down Lutris