From your pastebin it looks like Klipper is the issue?
try these:
Clear corrupted Klipper history (Corrupted file ?):
rm ~/.local/share/klipper/history2.lst
Switch to X11 temporarily ?
Go ham and reset plasmashell config:
mv ~/.config/plasma-org.kde.plasma.desktop-appletsrc \
~/.config/plasma-org.kde.plasma.desktop-appletsrc.bak
mv ~/.local/share/plasmashell ~/.local/share/plasmashell.bak