Libcurl.so.4 cannot run (no version information available)

I used AppImageLauncher for a while, until it stopped working for some reason. Now, every time it is run, it throws this error:

AppImageLauncher: /lib64/libcurl.so.4: no version information available (required by /usr/bin/../lib/x86_64-linux-gnu/appimagelauncher/libappimageupdate.so)
execv error: No such file or directory

I assume that means there are multiple versions of libcurl on my system, but I am not sure how to locate them. There’s a lot of copies of this library:

$ locate libcurl.so.4
/home/testuser/.local/share/containers/storage/overlay/174f5685490326fc0a1c0f5570b8663732189b327007e47ff13d2ca59673db02/diff/usr/lib64/libcurl.so.4
/home/testuser/.local/share/containers/storage/overlay/174f5685490326fc0a1c0f5570b8663732189b327007e47ff13d2ca59673db02/diff/usr/lib64/libcurl.so.4.3.0
/home/testuser/.local/share/containers/storage/overlay/3117a52bcd25e2675480d86b4a197c422eeab082cfd45fa8136b21ae74e1f0d3/diff/usr/lib/x86_64-linux-gnu/libcurl.so.4
/home/testuser/.local/share/containers/storage/overlay/3117a52bcd25e2675480d86b4a197c422eeab082cfd45fa8136b21ae74e1f0d3/diff/usr/lib/x86_64-linux-gnu/libcurl.so.4.5.0
/home/testuser/.local/share/containers/storage/overlay/3b2b75bbd51916f3edd0478a34298f057f4fdc46aa57efb23afed00d02bc0b5b/diff/usr/lib/libcurl.so.4
/home/testuser/.local/share/containers/storage/overlay/3b2b75bbd51916f3edd0478a34298f057f4fdc46aa57efb23afed00d02bc0b5b/diff/usr/lib/libcurl.so.4.8.0
/home/testuser/.local/share/containers/storage/overlay/4044b65feffc52ac4bb692e1262ca892d6b51ffb1066daf17757eb49bfdfc77f/diff/usr/lib/libcurl.so.4
/home/testuser/.local/share/containers/storage/overlay/4044b65feffc52ac4bb692e1262ca892d6b51ffb1066daf17757eb49bfdfc77f/diff/usr/lib/libcurl.so.4.8.0
/home/testuser/.local/share/containers/storage/overlay/43fda73aec85043fb6a9e0c47056c254da825e7770bd4c8ca1b270faa76da4e8/diff/usr/lib/libcurl.so.4
/home/testuser/.local/share/containers/storage/overlay/43fda73aec85043fb6a9e0c47056c254da825e7770bd4c8ca1b270faa76da4e8/diff/usr/lib/libcurl.so.4.8.0
/home/testuser/.local/share/containers/storage/overlay/48bcb4487bf6901e324b22a2301dcda6e23661afee703c3d867a2f37d6a905d2/diff/usr/lib/aarch64-linux-gnu/libcurl.so.4
/home/testuser/.local/share/containers/storage/overlay/48bcb4487bf6901e324b22a2301dcda6e23661afee703c3d867a2f37d6a905d2/diff/usr/lib/aarch64-linux-gnu/libcurl.so.4.7.0
/home/testuser/.local/share/containers/storage/overlay/511b31634bdb7cde1e2b80e6c9061fb53395b78a290bdc10ac29b88d9980db9c/diff/usr/lib/x86_64-linux-gnu/libcurl.so.4
/home/testuser/.local/share/containers/storage/overlay/511b31634bdb7cde1e2b80e6c9061fb53395b78a290bdc10ac29b88d9980db9c/diff/usr/lib/x86_64-linux-gnu/libcurl.so.4.7.0
/home/testuser/.local/share/containers/storage/overlay/5c04ffedadefa6de7b26888b4261f5bb66731353b42d5391a4fd1684adc15414/diff/usr/lib/x86_64-linux-gnu/libcurl.so.4
/home/testuser/.local/share/containers/storage/overlay/5c04ffedadefa6de7b26888b4261f5bb66731353b42d5391a4fd1684adc15414/diff/usr/lib/x86_64-linux-gnu/libcurl.so.4.7.0
/home/testuser/.local/share/containers/storage/overlay/7461ebddadf5cbc6a4c48cb9deb047bb47da5acf40d351fb7ac4b9805665fbdb/diff/usr/lib/libcurl.so.4
/home/testuser/.local/share/containers/storage/overlay/7461ebddadf5cbc6a4c48cb9deb047bb47da5acf40d351fb7ac4b9805665fbdb/diff/usr/lib/libcurl.so.4.8.0
/home/testuser/.local/share/containers/storage/overlay/a9d4dcad624a40acc9df8276f40ab1bdcc1296c17cd5be48e564c2772df0aee1/diff/usr/lib/libcurl.so.4
/home/testuser/.local/share/containers/storage/overlay/a9d4dcad624a40acc9df8276f40ab1bdcc1296c17cd5be48e564c2772df0aee1/diff/usr/lib/libcurl.so.4.8.0
/home/testuser/.local/share/containers/storage/overlay/b81a5d2992edfcb15ca538662149631247655332dd968d682c430fa797fb50b0/diff/usr/lib/libcurl.so.4
/home/testuser/.local/share/containers/storage/overlay/b81a5d2992edfcb15ca538662149631247655332dd968d682c430fa797fb50b0/diff/usr/lib/libcurl.so.4.8.0
/home/testuser/.local/share/containers/storage/overlay/c301ad118360a9093fb74f22bff144d1049fa47eaadbe3905da1b91ea9f7eaa5/diff/usr/lib/libcurl.so.4
/home/testuser/.local/share/containers/storage/overlay/c301ad118360a9093fb74f22bff144d1049fa47eaadbe3905da1b91ea9f7eaa5/diff/usr/lib/libcurl.so.4.8.0
/home/testuser/.local/share/containers/storage/overlay/c8ff3b702bf05a015ecc818b30dc082307c3cc19d98c05f506a9515fd115826d/diff/usr/lib/x86_64-linux-gnu/libcurl.so.4
/home/testuser/.local/share/containers/storage/overlay/c8ff3b702bf05a015ecc818b30dc082307c3cc19d98c05f506a9515fd115826d/diff/usr/lib/x86_64-linux-gnu/libcurl.so.4.8.0
/home/testuser/.local/share/containers/storage/overlay/cf93352beac0e9c03de932731264a037bcd7b3689bd448e8acf792871617b545/diff/usr/lib/libcurl.so.4
/home/testuser/.local/share/containers/storage/overlay/cf93352beac0e9c03de932731264a037bcd7b3689bd448e8acf792871617b545/diff/usr/lib/libcurl.so.4.8.0
/home/testuser/.local/share/containers/storage/overlay/dc5f82fd7a585116de7e9b0f6714c23fc43d2551833de0530686b50d9d96e907/diff/usr/lib/x86_64-linux-gnu/libcurl.so.4
/home/testuser/.local/share/containers/storage/overlay/dc5f82fd7a585116de7e9b0f6714c23fc43d2551833de0530686b50d9d96e907/diff/usr/lib/x86_64-linux-gnu/libcurl.so.4.8.0
/home/testuser/.local/share/containers/storage/overlay/e2a2ab50ccbd11a8e4f1c2bb278ed6161cfb722103c29156babd5df0bf86c78a/diff/usr/lib/libcurl.so.4
/home/testuser/.local/share/containers/storage/overlay/e2a2ab50ccbd11a8e4f1c2bb278ed6161cfb722103c29156babd5df0bf86c78a/diff/usr/lib/libcurl.so.4.8.0
/home/testuser/.local/share/containers/storage/overlay/eb001d154411d31248821edb17d7bb9939aed38f7bd887bcf2a164f655fb946f/diff/usr/lib/x86_64-linux-gnu/libcurl.so.4
/home/testuser/.local/share/containers/storage/overlay/eb001d154411d31248821edb17d7bb9939aed38f7bd887bcf2a164f655fb946f/diff/usr/lib/x86_64-linux-gnu/libcurl.so.4.8.0
/home/testuser/.local/share/containers/storage/overlay/ef9b57a285c09d36cd135abec4baf4acf9afc5a8fde7fce7eb7225f3773d46d8/diff/usr/lib/x86_64-linux-gnu/libcurl.so.4
/home/testuser/.local/share/containers/storage/overlay/ef9b57a285c09d36cd135abec4baf4acf9afc5a8fde7fce7eb7225f3773d46d8/diff/usr/lib/x86_64-linux-gnu/libcurl.so.4.8.0
/home/testuser/.local/share/containers/storage/overlay/fff42ffee33fcfd6d4bcacbe5757cb43681b9dc24820181f50095de766eb910e/diff/usr/lib/x86_64-linux-gnu/libcurl.so.4
/home/testuser/.local/share/containers/storage/overlay/fff42ffee33fcfd6d4bcacbe5757cb43681b9dc24820181f50095de766eb910e/diff/usr/lib/x86_64-linux-gnu/libcurl.so.4.7.0
/home/testuser/.local/share/flatpak/app/net.lutris.Lutris/x86_64/stable/19ee79d455b8e50f057911a2bba279efcb960ee6d565f794e9c9d41c290dcd14/files/lib/libcurl.so.4
/home/testuser/.local/share/flatpak/runtime/org.freedesktop.Platform/x86_64/23.08/cc4fffff444705e1693d40b956e7aa2c1a40297ee40df1173d3927a492258fa3/files/lib/x86_64-linux-gnu/libcurl.so.4
/home/testuser/.local/share/flatpak/runtime/org.freedesktop.Platform/x86_64/23.08/cc4fffff444705e1693d40b956e7aa2c1a40297ee40df1173d3927a492258fa3/files/lib/x86_64-linux-gnu/libcurl.so.4.8.0
/home/testuser/.local/share/flatpak/runtime/org.freedesktop.Platform/x86_64/24.08/969d05c0de0757b0f679118154e3e67b3c19d15e13d9bc66b5297437de3886fe/files/lib/x86_64-linux-gnu/libcurl.so.4
/home/testuser/.local/share/flatpak/runtime/org.freedesktop.Platform/x86_64/24.08/969d05c0de0757b0f679118154e3e67b3c19d15e13d9bc66b5297437de3886fe/files/lib/x86_64-linux-gnu/libcurl.so.4.8.0
/home/testuser/.local/share/flatpak/runtime/org.freedesktop.Sdk/x86_64/23.08/71726460b9c4fc0b0fb88f6d94644012d6f8e06c81a2d93391ca51c79b35ff5d/files/lib/x86_64-linux-gnu/libcurl.so.4
/home/testuser/.local/share/flatpak/runtime/org.freedesktop.Sdk/x86_64/23.08/71726460b9c4fc0b0fb88f6d94644012d6f8e06c81a2d93391ca51c79b35ff5d/files/lib/x86_64-linux-gnu/libcurl.so.4.8.0
/home/testuser/.local/share/flatpak/runtime/org.freedesktop.Sdk/x86_64/24.08/e8d0498c71f98949d7fb0ff0513bbba44c006005f9f1dcc89d6eb023308b4247/files/lib/x86_64-linux-gnu/libcurl.so.4
/home/testuser/.local/share/flatpak/runtime/org.freedesktop.Sdk/x86_64/24.08/e8d0498c71f98949d7fb0ff0513bbba44c006005f9f1dcc89d6eb023308b4247/files/lib/x86_64-linux-gnu/libcurl.so.4.8.0
/home/testuser/.local/share/flatpak/runtime/org.gnome.Platform/x86_64/46/c216ec47b13d278767d170b1ab21c8a483cccb8a4dfa803676b33791b8a955a7/files/lib/x86_64-linux-gnu/libcurl.so.4
/home/testuser/.local/share/flatpak/runtime/org.gnome.Platform/x86_64/46/c216ec47b13d278767d170b1ab21c8a483cccb8a4dfa803676b33791b8a955a7/files/lib/x86_64-linux-gnu/libcurl.so.4.8.0
/home/testuser/.local/share/flatpak/runtime/org.gnome.Platform.Compat.i386/x86_64/46/05c0f88a131e09c6166e65397d134029a1b65b0d522b87b1d522704b376e75d9/files/libcurl.so.4
/home/testuser/.local/share/flatpak/runtime/org.gnome.Platform.Compat.i386/x86_64/46/05c0f88a131e09c6166e65397d134029a1b65b0d522b87b1d522704b376e75d9/files/libcurl.so.4.8.0
/home/testuser/.local/share/flatpak/runtime/org.kde.Platform/x86_64/5.15-24.08/ca531f435f2a16f9487cdce9727d7f20c9fd1c489bf89c2a581e3aa47c4772a3/files/lib/x86_64-linux-gnu/libcurl.so.4
/home/testuser/.local/share/flatpak/runtime/org.kde.Platform/x86_64/5.15-24.08/ca531f435f2a16f9487cdce9727d7f20c9fd1c489bf89c2a581e3aa47c4772a3/files/lib/x86_64-linux-gnu/libcurl.so.4.8.0
/home/testuser/.local/share/lutris/runtime/Ubuntu-18.04-i686/libcurl.so.4
/home/testuser/.local/share/lutris/runtime/Ubuntu-18.04-x86_64/libcurl.so.4.bak
/home/testuser/.local/share/umu/sniper_platform_3.0.20250210.116596/files/lib/i386-linux-gnu/libcurl.so.4.7.0
/home/testuser/.local/share/umu/sniper_platform_3.0.20250210.116596/files/lib/x86_64-linux-gnu/libcurl.so.4.7.0
/home/testuser/.local/share/umu/var/tmp-6YBP22/usr/lib/i386-linux-gnu/libcurl.so.4
/home/testuser/.local/share/umu/var/tmp-6YBP22/usr/lib/i386-linux-gnu/libcurl.so.4.7.0
/home/testuser/.local/share/umu/var/tmp-6YBP22/usr/lib/x86_64-linux-gnu/libcurl.so.4
/home/testuser/.local/share/umu/var/tmp-6YBP22/usr/lib/x86_64-linux-gnu/libcurl.so.4.7.0
/home/testuser/.local/share/umu/var/tmp-8QJ122/usr/lib/i386-linux-gnu/libcurl.so.4
/home/testuser/.local/share/umu/var/tmp-8QJ122/usr/lib/i386-linux-gnu/libcurl.so.4.7.0
/home/testuser/.local/share/umu/var/tmp-8QJ122/usr/lib/x86_64-linux-gnu/libcurl.so.4
/home/testuser/.local/share/umu/var/tmp-8QJ122/usr/lib/x86_64-linux-gnu/libcurl.so.4.7.0
/home/testuser/.local/share/umu/var/tmp-9KI422/usr/lib/i386-linux-gnu/libcurl.so.4
/home/testuser/.local/share/umu/var/tmp-9KI422/usr/lib/i386-linux-gnu/libcurl.so.4.7.0
/home/testuser/.local/share/umu/var/tmp-9KI422/usr/lib/x86_64-linux-gnu/libcurl.so.4
/home/testuser/.local/share/umu/var/tmp-9KI422/usr/lib/x86_64-linux-gnu/libcurl.so.4.7.0
/home/testuser/.local/share/umu/var/tmp-BOH222/usr/lib/i386-linux-gnu/libcurl.so.4
/home/testuser/.local/share/umu/var/tmp-BOH222/usr/lib/i386-linux-gnu/libcurl.so.4.7.0
/home/testuser/.local/share/umu/var/tmp-BOH222/usr/lib/x86_64-linux-gnu/libcurl.so.4
/home/testuser/.local/share/umu/var/tmp-BOH222/usr/lib/x86_64-linux-gnu/libcurl.so.4.7.0
/home/testuser/.local/share/umu/var/tmp-ZFUZ22/usr/lib/i386-linux-gnu/libcurl.so.4
/home/testuser/.local/share/umu/var/tmp-ZFUZ22/usr/lib/i386-linux-gnu/libcurl.so.4.7.0
/home/testuser/.local/share/umu/var/tmp-ZFUZ22/usr/lib/x86_64-linux-gnu/libcurl.so.4
/home/testuser/.local/share/umu/var/tmp-ZFUZ22/usr/lib/x86_64-linux-gnu/libcurl.so.4.7.0
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/SteamLinuxRuntime/var/steam-runtime/pinned_libs_32/libcurl.so.4
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/SteamLinuxRuntime/var/steam-runtime/pinned_libs_64/libcurl.so.4
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/SteamLinuxRuntime_sniper/sniper_platform_3.0.20250408.124536/files/lib/i386-linux-gnu/libcurl.so.4.7.0
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/SteamLinuxRuntime_sniper/sniper_platform_3.0.20250408.124536/files/lib/x86_64-linux-gnu/libcurl.so.4.7.0
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/SteamLinuxRuntime_sniper/var/tmp-HIW772/usr/lib/i386-linux-gnu/libcurl.so.4
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/SteamLinuxRuntime_sniper/var/tmp-HIW772/usr/lib/i386-linux-gnu/libcurl.so.4.7.0
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/SteamLinuxRuntime_sniper/var/tmp-HIW772/usr/lib/x86_64-linux-gnu/libcurl.so.4
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/SteamLinuxRuntime_sniper/var/tmp-HIW772/usr/lib/x86_64-linux-gnu/libcurl.so.4.7.0
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/SteamLinuxRuntime_soldier/soldier_platform_2.0.20250408.124525/files/lib/i386-linux-gnu/libcurl.so.4.5.0
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/SteamLinuxRuntime_soldier/soldier_platform_2.0.20250408.124525/files/lib/x86_64-linux-gnu/libcurl.so.4.5.0
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/SteamLinuxRuntime_soldier/var/tmp-3PRNZ2/usr/lib/i386-linux-gnu/libcurl.so.4
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/SteamLinuxRuntime_soldier/var/tmp-3PRNZ2/usr/lib/i386-linux-gnu/libcurl.so.4.5.0
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/SteamLinuxRuntime_soldier/var/tmp-3PRNZ2/usr/lib/x86_64-linux-gnu/libcurl.so.4
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/SteamLinuxRuntime_soldier/var/tmp-3PRNZ2/usr/lib/x86_64-linux-gnu/libcurl.so.4.5.0
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamrt64/steam-runtime-steamrt/steamrt3c_platform_3c.0.20250425.126096/files/lib/i386-linux-gnu/libcurl.so.4.7.0
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamrt64/steam-runtime-steamrt/steamrt3c_platform_3c.0.20250425.126096/files/lib/x86_64-linux-gnu/libcurl.so.4.7.0
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamrt64/steam-runtime-steamrt/var/tmp-M69W72/usr/lib/i386-linux-gnu/libcurl.so.4
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamrt64/steam-runtime-steamrt/var/tmp-M69W72/usr/lib/i386-linux-gnu/libcurl.so.4.7.0
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamrt64/steam-runtime-steamrt/var/tmp-M69W72/usr/lib/x86_64-linux-gnu/libcurl.so.4
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamrt64/steam-runtime-steamrt/var/tmp-M69W72/usr/lib/x86_64-linux-gnu/libcurl.so.4.7.0
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/steam-runtime/pinned_libs_32/libcurl.so.4
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/steam-runtime/pinned_libs_64/libcurl.so.4
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/steam-runtime/usr/lib/i386-linux-gnu/libcurl.so.4
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/steam-runtime/usr/lib/i386-linux-gnu/libcurl.so.4.2.0
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/steam-runtime/usr/lib/i386-linux-gnu/libsteam-runtime-our-libcurl.so.4
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/steam-runtime/usr/lib/i386-linux-gnu/libsteam-runtime-shim-libcurl.so.4
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/steam-runtime/usr/lib/x86_64-linux-gnu/libcurl.so.4
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/steam-runtime/usr/lib/x86_64-linux-gnu/libcurl.so.4.2.0
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/steam-runtime/usr/lib/x86_64-linux-gnu/libsteam-runtime-our-libcurl.so.4
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/steam-runtime/usr/lib/x86_64-linux-gnu/libsteam-runtime-shim-libcurl.so.4
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/steam-runtime.old/pinned_libs_32/libcurl.so.4
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/steam-runtime.old/pinned_libs_64/libcurl.so.4
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/steam-runtime.old/usr/lib/i386-linux-gnu/libcurl.so.4
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/steam-runtime.old/usr/lib/i386-linux-gnu/libcurl.so.4.2.0
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/steam-runtime.old/usr/lib/i386-linux-gnu/libsteam-runtime-our-libcurl.so.4
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/steam-runtime.old/usr/lib/i386-linux-gnu/libsteam-runtime-shim-libcurl.so.4
/home/testuser/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/steam-runtime.old/usr/lib/x86_64-linux-gnu/libcurl.so.4
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But not all of them are relevant, obviously. ldd shows libappimageupdate.so uses /lib64/libcurl.so.4 (0x00007ff695530000). Thanks for any help!

You could try a web search for the quoted text.

There are a number of reports of simular issues.
The two I read talked about too many versions of libcurl being on the systems and people building curl from source.

Maybe something you could research?

has a discourse community.

Yes, I read those. I actually had a similar issue that was fixed by a reboot, except that isn’t working this time. I don’t think I’ve ever tried to build curl from source. Like I wrote in my original post, I seem to have multiple versions of curl, but I’m not really sure how to go forward.

  1. The issue is with AppImageLauncher, not the AppImage protocol. I’ll add to the issue on the AIL repo, just in case this forum can’t help me understand what the issue with libcurl is.
  2. The Discourse forum was superseded by GitHub Discussions.