I’m running into a proguard error that I’ve having...

# android

[apptreematt]

I’m running into a proguard error that I’ve having trouble making sense of. Here is the code

fun handleMissingList(list : ATList, completion: (downloaded : Boolean) -> Unit) {
        showProgressDialog(R.string.list_downloading)
        ListController.downloadList(list, username = AuthenticationController.instance?.username, force = true)
                .subscribeOn(<http://Schedulers.io|Schedulers.io>())
                .observeOn(AndroidSchedulers.mainThread())
                .compose(bindToLifecycle<ATList>())
                .subscribeWith {
                    onNext {
                        completion(true)
                    }
                    onError { error ->
                        alert(error.message ?: getString(R.string.unknown_error), getString(R.string.list_download_failed)) {
                            positiveButton(R.string.try_again) {
                                [e-mail](list, completion)
                            }
                            negativeButton(R.string.cancel) {}
                        }.show()
                        completion(false)
                    }
                    onCompleted { hideProgressDialog() }
                }
    }