how to load a remote url inside grapes js

this is how i tried to load my gitpage but its not working
 mounted() {
                const LandingPage = {
                html: '',
                css: null,
                components: null,
                style: null,
                };
                this.editor = grapesjs.init({
                container: "#gjs",
                canvas: {
                     styles: [],
                },
                fromElement: true,
                components:'' ,
                style: '',
                plugins: [],
                pluginsOpts: {
                    "gjs-preset-webpage": {}
                },
                 storageManager: {
                    type: 'remote',
                    stepsBeforeSave: 10,
                    urlStore: '',
                    urlLoad: '',
                     params:{
                            'Access-Control-Allow-Origin':'http://laravel-vue-spa.test',
                        },
                    contentTypeJson: true,
                    headers: {
                        'Content-Type': 'application/json'
                     },
                     json_encode:{
                         'gjs-components': [],
                          'gjs-style': [],
                     }
                    },
                });
                this.editor.setComponents('<div class="cls">New component</div>');
                this.editor.load=(res => console.log('Load callback'));
        },
    }