Can't compile to WASM

[GaspardCulis]

I followed the slint WASM build instructions, but when I compile (wasm-pack build --release --target web) I get this error:

   Compiling slint v1.0.1
   Compiling tetris-slint v0.1.0 (/home/gaspard/Programmation/rust/tetris-slint)
error[E0277]: the trait bound `JsValue: From<PlatformError>` is not satisfied
  --> src/main.rs:21:36
   |
21 | #[cfg_attr(target_arch = "wasm32", wasm_bindgen(start))]
   |                                    ^^^^^^^^^^^^^^^^^^^ the trait `From<PlatformError>` is not implemented for `JsValue`
   |
   = help: the following other types implement trait `From<T>`:
             <JsValue as From<&'a String>>
             <JsValue as From<&'a T>>
             <JsValue as From<&'a str>>
             <JsValue as From<*const T>>
             <JsValue as From<*mut T>>
             <JsValue as From<JsError>>
             <JsValue as From<Option<T>>>
             <JsValue as From<String>>
           and 156 others
   = note: required for `PlatformError` to implement `Into<JsValue>`
   = note: required for `Result<(), PlatformError>` to implement `wasm_bindgen::__rt::Start`
   = note: this error originates in the attribute macro `wasm_bindgen` (in Nightly builds, run with -Z macro-backtrace for more info)

Here is the repo containing all of the code What am I missing?

          The code and design looks great! Any plans to do a wasm version for online playing? Could use GitHub pages. (I can also try to help if that's interesting for you)

Originally posted by @tronical in https://github.com/slint-ui/slint/issues/2672#issuecomment-1529484130

[tronical]

I think the easiest fix is to change the signature of main to be just fn main() and use .unwrap() instead of ? in the function calls that return a platform error.

[GaspardCulis]

Worked!