Can't build niri anymore, error: evaluation aborted with the following error message: 'lib.customisation.callPackageWith: Function called without required argument "ffmpeg_9"

I’v also posted this issue on Can't build niri anymore, error: evaluation aborted with the following error message: 'lib.customisation.callPackageWith: Function called without required argument "ffmpeg_9" · Issue #1855 · sodiboo/niri-flake · GitHub, but I’m not sure if it is a niri specific issue. Because when I remove niri from my config I get the same ffmpeg_9 issue with zen-browser. – After a nix flake update I get this error: error: … while evaluating attribute 'nodes' at ...