Bug 513572

SUMMARY
After the latest version of the plasma stable release, and logging with a Wayland session, the whole desktop is rendered inoperable with no possibility of launching any applications. When clicking the application, an error messages pops out pointing that some 'unit file' does not exists.

STEPS TO REPRODUCE
1. Download and install the latest plasma version on Arch based systems
2. Log into a Wayland session
3. After a few minutes, trying to open any application or folder on both the taskbar or desktop fails with an error. Ex: "Unit app-brave\x2dbrowser@38a8d19e80934f68b4bb121c356ed078.service not found."

OBSERVED RESULT
After a few minutes and some programs opened, I can no longer open any application on the taskbar, app menu, or desktop. With frustration the desktop experience is rendered useless, as I can no longer operate the desktop. However, running programs from previous opened konsole session works, and clicking the '+' icon on folders still allows some interaction with the desktop folders, but no signs of 'dolphin' or even launching commands with the app menu reliably working.

EXPECTED RESULT
The desktop should open the programs with no errors, allowing the user to interact with the machine and applications. 

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: CachyOS Linux kernel 6.18.2-2-cachyos (64-bit)
KDE Session: Wayland
Wayland Version: 1.24.0-1.1
Wayland Protocols Version: 1.47-1
Xorg-Xwayland Version: 24.1.9-1.1
Mesa Stack Version: 1:25.3.2-2
SystemD Version: 258.3-1
KDE Plasma Version: 6.5.4
KDE Frameworks Version: 6.21.0
KDE Applications: 25.12.0-1.1
KDE KF6: 6.21.0-1.1
Qt Version: 6.10.1

HARDWARE VERSION
Processor: 4 x Intel® Core™ i3-7020U CPU @ 2.30GHz
Memory: 8 GiB of RAM (7.6 GiB usable)
Storage Medium: Laptop HDD
Graphics Version: Intel® HD Graphics 620
OEM: Acer
Product Name: Aspire A315-53
UEFI Firmware: V2.03

ADDITIONAL INFORMATION
This happened very recently, as the update before the latest version did not introduce this bug, it was only found on the latest versions.