Error: exec proxy not found for :: Stepper :: startStepperUpdates

[BonBonSlick]

I was realy mad because there not much docs about how to init cordova plugins.

We use nuxt (vue) + vuetify.

Cordova treated as plugin

     try {
                this.initStepsCounter()
            }
            catch (err) {
                console.log(`error`, err);
                alert(JSON.stringify(err));
            }
        },

        initStepsCounter () {
            Vue.stepper = window.stepper;
            const {Stepper} = window;
            console.log(`Stepper`, Stepper);
            console.log(`window.Stepper`, window.Stepper);
            console.log(`window.stepper`, window.stepper);
            console.log(`window`, window);
            console.log(`navigator.stepper`, navigator.stepper);
            console.log(`navigator`, navigator);
            console.log(`Vue.cordova`, Vue.cordova);
            console.log(`this`, this);
            console.log(`this.cordova`, this.cordova);
            console.log(`window.cordova`, window.cordova);
            console.log(`navigator.cordova`, navigator.cordova);
            console.log(`navigator.camera`, navigator.camera);
            var offset = 0, options = {
                pedometerIsCountingText:      'Pedometer is counting',
                pedometerStepsToGoFormatText: '%s steps to go'
            };

            window.stepper.startStepperUpdates(
                offset,
                result => {
                    var stepsToday = result.steps_today;
                    console.log(`stepsToday`, stepsToday);
                },
                err => {
                    console.error(err);
                },
                options
            );

        },

window.stepper 222 undefined
cordova.js:1021 adding proxy for Camera
Stepper undefined
window.Stepper undefined
window.stepper Stepper
window Window
navigator.stepper undefined
 navigator Navigator
 Vue ƒ Tn(t){this._init(t)}
Vue.cordova undefined
this ObjectinitCustomUrlScheme: ƒ ()initStatusBar: ƒ ()initStepsCounter: ƒ ()initWKWebView: ƒ ()initialize: ƒ ()onDeviceReady: ƒ ()__proto__: Object
this.cordova undefined
window.cordova Object
navigator.cordova undefined
navigator.camera Object
cordova.js:1001 Error: exec proxy not found for :: Stepper :: startStepperUpdates

How do we use your plugin?
How to access it???

Semple configs here this project were used as skeleton