Looks like your mirror list and possibly your file list are corrupted. You’ve got too many failed downloads and the error messages also state that your dbus-broker-units package is corrupted. It could all have been caused by an intermittent network connection at your end.
I would advise booting up from the live USB and first checking your filesystem integrity, just so as to exclude that from being the cause of the corrupted package. Do not mount the filesystem yet at this point, but run a full fsck on it. Then, if everything checks out okay, mount and manjaro-chroot into your system, roll back your most recent backup from before the update, and try the update process again, as follows…
Thanks D.Dave and Aragorn!
Switching to dbus-daemon-units worked, But as Aragorn noticed I had a lot of package integrity errors.
I’ve tried reinstalling and refreshing keys to solve PGP signature error in order to install dbus-daemon-units. The problem was solved, when I’ve adjusted the live ISO clock…
Now the system is working.