Why is ymaps.ready() not working?

Question

Yandex maps

hello script.

<script src="https://api-maps.yandex.ru/2.1/?lang=ru_RU&amp;apikey="some_api_key"></script>

is loaded outside of the Vue context, I use ymaps.ready() to test the loading of the API

...
mounted() {
            ymaps.ready({
                successCallback: () => {
                    this.yaMapInit()
                }
            })
},
...
methods: {
...
yaMapInit() {
                let id = this.forId

                try {
                    this.SuggestView = new ymaps.SuggestView(id, {
                        provider: { suggest: (...args) => this.suggest(...args) },
                        boundedBy: this.bounds[this.brandCode],
                        container: document.getElementById(id + '-container'),
                        results: 50
                    })

                    this.SuggestView.events.add('select', e => {
                        this.geoValue = JSON.parse(e.get('item').jsonData).city
                        localStorage.setItem('location.city', JSON.parse(e.get('item').jsonData).city)
                    })

                    console.log('yamaps init')
                } catch (e) {
                    console.log(`yamaps init error: ${e}`)
                }
            },
...
}

And every time the page is loaded for the first time, I get an init error.
ymaps.SuggestView is not constructor
What could be the problem?