error[E0277]: the `?` operator can only be used in a closure that returns `Result` or `Option` (or another type that implements `std::ops::FromResidual`)
   --> src/app/from_string.rs:431:30
    |
418 |                         let artifact = artifact_id.unwrap_or_else(|| {
    |                                                                   -- this function should return `Result` or `Option` to accept `?`
...
431 |                             )?
    |                              ^ cannot use the `?` operator in a closure that returns `std::string::String`
    |
    = help: the trait `std::ops::FromResidual<std::result::Result<std::convert::Infallible, anyhow::Error>>` is not implemented for `std::string::String`