Can't add pre-existing Steam Library

[YamiYukiSenpai]

Ensure there isn't an existing issue for this and check the wiki

• This issue is not a duplicate and I have checked the wiki.

Current Behavior

I currently can't add a pre-existing Steam Library.

I have to rename it and create an empty one, then add it.

Expected Behavior

Pre-existing game library should be added easily without hassle

Steps To Reproduce

No response

Environment

os_release:
    name:               "KDE neon"
    version:            "Unstable Edition"
snap_info:
    steam_revision:     206
    snapd_revision:     23545
lspci:
    01:00.0:            NVIDIA Corporation GP107M [GeForce GTX 1050 3 GB Max-Q] (rev a1)
    05:00.0:            Advanced Micro Devices, Inc. [AMD/ATI] Renoir (rev c7)
glxinfo:
    gpu:                AMD Radeon Graphics (radeonsi, renoir, LLVM 15.0.7, DRM 3.57, 6.8.0-51-generic)
    gpu_version:        4.6 (Core Profile) Mesa 24.2.3 - kisak-mesa PPA
lscpu:
    model_name:         AMD Ryzen 5 4600H with Radeon Graphics
xdg_current_desktop:    KDE
desktop_session:        plasma

gaming-graphics-core22 version

No response

Anything else?

$ sudo journalctl -f | grep -i steam
[sudo] password for yamiyuki: 
Jan 05 01:00:48 evie-gaming-neon steam[25892]: Couldn't write /usr/lib/i386-linux-gnu/libm.so.6/.steam_exec_test.sh: Not a directory
Jan 05 01:00:48 evie-gaming-neon steam[25892]: Couldn't write /usr/lib/i386-linux-gnu/libmemusage.so/.steam_exec_test.sh: Not a directory
Jan 05 01:00:48 evie-gaming-neon steam[25892]: Couldn't write /usr/lib/i386-linux-gnu/libnsl.so.1/.steam_exec_test.sh: Not a directory
Jan 05 01:00:48 evie-gaming-neon steam[25892]: Couldn't write /usr/lib/i386-linux-gnu/libnss_compat.so.2/.steam_exec_test.sh: Not a directory
Jan 05 01:00:48 evie-gaming-neon steam[25892]: Couldn't write /usr/lib/i386-linux-gnu/libnss_dns.so.2/.steam_exec_test.sh: Not a directory
Jan 05 01:00:48 evie-gaming-neon steam[25892]: Couldn't write /usr/lib/i386-linux-gnu/libnss_files.so.2/.steam_exec_test.sh: Not a directory
Jan 05 01:00:48 evie-gaming-neon steam[25892]: Couldn't write /usr/lib/i386-linux-gnu/libnss_hesiod.so.2/.steam_exec_test.sh: Not a directory
Jan 05 01:00:48 evie-gaming-neon steam[25892]: Couldn't write /var/.steam_exec_test.sh: Read-only file system
Jan 05 01:01:28 evie-gaming-neon steam[25892]: Couldn't write /mnt/shared/games/yamiyuki/SteamLibrary/.steam_exec_test.sh: Permission denied
Jan 05 01:03:04 evie-gaming-neon steam[25892]: Couldn't write /boot/.steam_exec_test.sh: Read-only file system
Jan 05 01:03:04 evie-gaming-neon steam[25892]: Couldn't write /host/.steam_exec_test.sh: Read-only file system
Jan 05 01:03:04 evie-gaming-neon steam[25892]: Couldn't write /meta/.steam_exec_test.sh: Read-only file system
Jan 05 01:03:04 evie-gaming-neon steam[25892]: Couldn't write /opt/.steam_exec_test.sh: Read-only file system
Jan 05 01:03:04 evie-gaming-neon steam[25892]: Couldn't write /srv/.steam_exec_test.sh: Read-only file system
Jan 05 01:03:04 evie-gaming-neon steam[25892]: Couldn't write /usr/.steam_exec_test.sh: Read-only file system