[1454] Why the Custom Loading Component may not work?[re-open]

 My nuxt.config.js

module.exports = {
    // loading: false,
    // loading: '~/components/loading.vue',
    loading: {
        color: 'red',
        height: '5px'
    },
    head: {
        meta: [
            {charset: 'utf-8'},
            {'http-equiv': 'X-UA-Compatible', content: 'IE=edge'}
        ]
    },
    build: {
        extractCSS: true
    }
};

I have a layout and some components. I'm including to pages layout and components. None of the loading are included