failed to start lightdm service when boot the system

hello, recently I upgrade my deepin version Manjaro and failed to start lightdm service when boot the system, and I use the command

sudo ligthdm --test-mode --debug

in the log I find the error

Error updating user /org/freedesktop/Accounts/User1000: GDBus.Error:org.freedesktop.Accounts.Error. PermissionDenied: Not authorized: GDBus.Error: org.freedesktop.PolicyKit1.Error.Failed: Action org.freedesktop.DisplayManager.AccountsService.ReadAny is not registrered

Below is the debug info for ligthdm --test-mode --debug(Sorry to paste the pic here I cannot copy the log info without display manager on Manjaro)

Thank you

lightdm needs to be run with sudo

but first, make sure the last update actually finished properly, if it gives connection errors, you can connect to wifi with.
nmtui
activate connection, then

sudo pacman-mirrors -f8 && sudo pacman -Syyu

was anything updated? yes? reboot, then:
then post output of:

systemctl status lightdm
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