axum::routing::get requires handlers to satisfy OperationHandler

[sebastinez]

I started using aide for an HTTP API I'm working on, so I can generate OpenAPI specifications quickly and with less errrors.
I'm running into an issue which is probably easily solved but I'm not able to figure it out yet, so I wrote a small reproducible repo.
Which can be found here: https://github.com/sebastinez/axum_aide

Usually this works fine with axum but when using aide and the wrapped axum I get the following error.

error[E0277]: the trait bound `fn(axum::extract::State<Context>) -> impl Future<Output = Result<axum_jsonschema::Json<Stats>, anyhow::Error>> {handler}: OperationHandler<_, _>` is not satisfied
   --> src/main.rs:36:37
    |
36  |     ApiRouter::new().route("/", get(handler)).with_state(ctx)
    |                                 --- ^^^^^^^ the trait `OperationHandler<_, _>` is not implemented for fn item `fn(axum::extract::State<Context>) -> impl Future<Output = Result<axum_jsonschema::Json<Stats>, anyhow::Error>> {handler}`
    |                                 |
    |                                 required by a bound introduced by this call
    |
note: required by a bound in `aide::axum::routing::get`
   --> /Users/sebastinez/.cargo/registry/src/index.crates.io-6f17d22bba15001f/aide-0.13.0/src/axum/routing.rs:345:1
    |
345 | method_router_top_level!(get, get_with);
    | ^^^^^^^^^^^^^^^^^^^^^^^^^---^^^^^^^^^^^
    | |                        |
    | |                        required by a bound in this function
    | required by this bound in `get`
    = note: this error originates in the macro `method_router_top_level` (in Nightly builds, run with -Z macro-backtrace for more info)

any help is greatly appreciated.

[Wicpar]

anyhow::Error does not implement OperationHandler, you need to convert it to a type that supports it,

[sebastinez]

Thank you @Wicpar as I suspected the solution was much closer than expected, was able to use the thiserror package which I originally use in my project and add OperationIo to my Error enum.