Error on Windows, cargo-leptos tries to find .exe instead of .wasm file

[Boscop]

I tried to build https://github.com/benwis/leptos-fermyon-spin-blog-demo on Windows, but I get this error:

> spin up --build
[...]
      Cargo finished cargo build --package=leptos_blog_demo_finished --lib --target=wasm32-wasi --no-default-features --features=ssr --release
Error: at `C:\Users\me\scoop\persist\rustup\.cargo\registry\src\index.crates.io-6f17d22bba15001f\cargo-leptos-0.2.20\src\compile\server.rs:40:22`

Caused by:
    0: at `C:\Users\me\scoop\persist\rustup\.cargo\registry\src\index.crates.io-6f17d22bba15001f\cargo-leptos-0.2.20\src\service\site.rs:117:44`
    1: Could not read "target\\wasm32-wasi\\release\\leptos_blog_demo_finished.exe" at `C:\Users\me\scoop\persist\rustup\.cargo\registry\src\index.crates.io-6f17d22bba15001f\cargo-leptos-0.2.20\src\ext\fs.rs:44:10`
    2: The system cannot find the file specified. (os error 2)

Btw, these files exist: target\wasm32-wasi\release\leptos_blog_demo_finished.wasm and target\front\wasm32-unknown-unknown\release\leptos_blog_demo_finished.wasm