Pacman update failing after Timeshift rollback

[Aragorn]

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[Stable Update] 2021-06-14 - Kernels, Browsers, Mesa, Deepin, Systemd, Gnome Apps 40.2, Pipewire, Haskell

Known issues and solutions This is a wiki post; please edit as necessary. Please, consider subscribing to the Stable Updates Announcements RSS feed New issues: You might be blocked updating when using pacman due to some libcanberra packages. Simply remove those packages: sudo pacman -Rdd lib32-libcanberra-pulse lib32-libcanberra-gstreamer libcanberra-pulse libcanberra-gstreamer. We recommend to use pamac anyway, which does this automatically: pamac update linux49 nor linux419 seems no…

That post by @philm dates back to the 14th of June 2021. Looks like it must have been quite a while since you made your last backup, hmm?