No such file or directory when getting assets

My web dev experience is almost 0, so this might be something trivial, but: When running `cargo xtask assets --watch`, as mentioned in [DEVELOPMENT.md](https://github.com/integer32llc/margo/blob/fd468421f423f3d4d68659c2468c65665a11b547/DEVELOPMENT.md), I get the following error: ``` Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s Running `target/debug/xtask assets --watch` Lockfile is up to date, resolution step is skipped Already up to date Done in 768ms Error: Could not watch the asset directory Caused by this error: 1: No such file or directory (os error 2) about ["/home/../margo/ui/dist"] ```