Getting this Issue

[viibhuGupta]

        file:///home/vibhu/.local/share/plasma/plasmoids/org.kde.windowbuttons/contents/ui/main.qml:23:1: module "org.kde.appletdecoration" is not installed

[vajdao]

confirmed on my end too!

Trying to install this "Utterly-Sweet-Plasma" theme, and followed all guides, and got the same error message...
What's happening?

Operating System: EndeavourOS
KDE Plasma Version: 6.0.4
KDE Frameworks Version: 6.2.0
Qt Version: 6.7.0
Kernel Version: 6.9.1-arch1-2 (64-bit)
Graphics Platform: Wayland
Processors: 4 × Intel® Core™ i5-6500 CPU @ 3.20GHz
Memory: 15.6 GiB of RAM
Graphics Processor: NVIDIA GeForce GTX 1050 Ti/PCIe/SSE2
Manufacturer: MSI
Product Name: MS-7972
System Version: 2.0

[witt-bit]

❯ screenfetch

 ██████████████████  ████████     witt@witt-SwiftHealth-Manjaro
 ██████████████████  ████████     OS: Manjaro 24.0.0 Wynsdey
 ██████████████████  ████████     Kernel: x86_64 Linux 6.6.30-2-MANJARO
 ██████████████████  ████████     Uptime: 2h 29m
 ████████            ████████     Packages: 1519
 ████████  ████████  ████████     Shell: zsh 5.9
 ████████  ████████  ████████     Resolution: 3840x1080
 ████████  ████████  ████████     DE: KDE
 ████████  ████████  ████████     WM: KWin
 ████████  ████████  ████████     GTK Theme: WhiteSur-Dark-solid-nord [GTK2/3]
 ████████  ████████  ████████     Icon Theme: McMojave-circle-dark
 ████████  ████████  ████████     Disk: 361G / 1.2T (33%)
 ████████  ████████  ████████     CPU: Intel Core i7-10700 @ 16x 4.8GHz [65.0°C]
 ████████  ████████  ████████     GPU: Mesa Intel(R) UHD Graphics 630 (CML GT2)
                                  RAM: 11228MiB / 23779MiB