I can't compile the code, it prompts a compilation error, could you help me?

[eyes4]

When compiling the program, it prompts:
error[E0277]: the trait bound fn(axum::extract::State<Arc<AppState>>, axum::Json<RegisterUserSchema>) -> impl std::future::Future<Output = Result<impl IntoResponse, (axum::http::StatusCode, axum::Json<JsonValue>)>> {register_user_handler}: Handler<_, _, _> is not satisfied
--> src/route.rs:21:43
|
21 | .route("/api/auth/register", post(register_user_handler))
| ---- ^^^^^^^^^^^^^^^^^^^^^ the trait Handler<_, _, _> is not implemented for fn item fn(axum::extract::State<Arc<AppState>>, axum::Json<RegisterUserSchema>) -> impl std::future::Future<Output = Result<impl IntoResponse, (axum::http::StatusCode, axum::Json<JsonValue>)>> {register_user_handler}
| |
| required by a bound introduced by this call
|
= help: the following other types implement trait Handler<T, S, B>:
<Or<L, R, Lt, Rt, S, B> as Handler<(M, Lt, Rt), S, B>>
<IntoHandler<H, T, S, B> as Handler<T, S, B>>
<Layered<L, H, T, S, B, B2> as Handler<T, S, B2>>
<MethodRouter<S, B> as Handler<(), S, B>>

[henningcullin]

have you tried changing impl IntoResponse to UserResponse?