it seems to work now!
sudo nano /etc/mkinitcpio.conf
change:
HOOKS="base udev autodetect modconf block keyboard keymap filesystems fsck"
to:
HOOKS="base udev autodetect modconf block keyboard keymap filesystems fsck shutdown"
sudo mkinitcpio -P
sudo grub-mkconfig -o /boot/grub/grub.cfg
sudo systemctl restart systemd-coredump.socket
sudo systemctl reset-failed