I have KDE 5.18.5 running on stable branch and decided to switch to testing to upgrade to KDE 5.19.x. After the upgrade, KDE hangs on the splash screen. I tried Ctl+Alt+F2 and killed Xorg, by killing sddm service and then type the command 'plasmashell' or even 'plasmashell --version', I get the following error
qt.qpa.xcb: couldn't connect to display segmentation fault (core dumped)
Any ideas on how to fix this? I reinstalled libxcb and qt5-base, but they didn't help. Any help is appreciated.