Menu Bars disappeared

All the menu bars have disappeared, also all the titlebars and frames have disappeared.

Tried adding new menu bars but no good came out of that.

Output of neofetch:

OS : Manjaro Linux x86_64
Host : Latitude 3490
Kernel : 5.4.85-1-MANJARO
Uptime : 44 mins
Packages : 1397 (pacman)
Shell : zsh 5.8
Resolution : 1366x768
DE : Plasma 5.20.4
WM : KWin
WM Theme : Sweet-Mars-transparent
Theme : Layan [Plasma], Sweet-mars [GTK2/3]
Icons : candy-icons [Plasma], candy-icons [GTK2/3]
Terminal : konsole
Terminal Font : MesloLGS Nerd Font Mono 10
CPU : Intel i5-8250U (8) @ 3.400GHz
GPU : Intel UHD Graphics 620
Memory : 2492MiB / 7858MiB

“Menu Bars” as in Toolbars? Is this in Dolphin, a browser, etc?