WASM/Rust build error

gistfile1.txt

 j@lear  ~/dev/accept/test/sbr-validate-npm   master  wasm-pack build
  
  [1/9] Checking `rustc` version...
  [2/9] Checking crate configuration...
  [3/9] Adding WASM target...
  info: component 'rust-std' for target 'wasm32-unknown-unknown' is up to date
  [4/9] Compiling to WASM...
     Compiling sbr-validate-npm v0.9.0 (/home/j/dev/accept/test/sbr-validate-npm)
  error[E0277]: the trait bound `sbr_interpreter_api::Interpreter: wasm_bindgen::convert::IntoWasmAbi` is not satisfied
    --> src/lib.rs:38:1
     |
  38 | #[wasm_bindgen]
     | ^^^^^^^^^^^^^^^ the trait `wasm_bindgen::convert::IntoWasmAbi` is not implemented for `sbr_interpreter_api::Interpreter`
     |
     = note: required because of the requirements on the impl of `wasm_bindgen::convert::ReturnWasmAbi` for `sbr_interpreter_api::Interpreter`
  
  error: aborting due to previous error
  
  For more information about this error, try `rustc --explain E0277`.
  error: Could not compile `sbr-validate-npm`.
  
| To learn more, run the command again with --verbose.
Compiling your crate to WebAssembly
Caused by: Process exited with exit code: 101: `cargo build` did not exit successfully.

stdout:

stderr:

   Compiling sbr-validate-npm v0.9.0 (/home/j/dev/accept/test/sbr-validate-npm)
error[E0277]: the trait bound `sbr_interpreter_api::Interpreter: wasm_bindgen::convert::IntoWasmAbi` is not satisfied
  --> src/lib.rs:38:1
   |
38 | #[wasm_bindgen]
   | ^^^^^^^^^^^^^^^ the trait `wasm_bindgen::convert::IntoWasmAbi` is not implemented for `sbr_interpreter_api::Interpreter`
   |
   = note: required because of the requirements on the impl of `wasm_bindgen::convert::ReturnWasmAbi` for `sbr_interpreter_api::Interpreter`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0277`.
error: Could not compile `sbr-validate-npm`.

To learn more, run the command again with --verbose.