Trouble updating

Warning: When installing packages in Arch, avoid refreshing the package list without upgrading the system (for example, when a package is no longer found in the official repositories). In practice, do not run pacman -Sy package_name instead of pacman -Syu package_name , as this could lead to dependency issues. See System maintenance#Partial upgrades are unsupported and BBS#89328.
pacman - ArchWiki

You may have created a partial sync state by updating the metadata.

The command sudo pacman -S pacman may create a partial sync state.

Please use

sudo pacman -Syu <pkgname>

Also see this comment in [Unstable Update] June 2025 - #31 by Yochanan and the preceeding comment.

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