Can't open system settings since last update

Okay I found a temporary workaround. I remembered that it crashed when I viewed “multitasking” panel. So I used gsettings to check the keys of org.gnome.ControlCenter

gsettings list-keys org.gnome.ControlCenter 
last-panel
show-development-warning

then check

gsettings get org.gnome.ControlCenter last-panel 
'multitasking'

this is the problematic panel that was crashing the control center every time. So I did

gsettings reset org.gnome.ControlCenter last-panel

and voila, I can open settings again. Not touching that panel till this gets fixed!