How to add page to sidebar ?

Add same path as same as you put the page into pages folder.

                            
// ------------------------------------------------------------------------
// File: src/app/(DashboardLayout)/layouts/vertical/sidebar/Menuitems.ts
// ------------------------------------------------------------------------
    
const Menuitems = MenuitemsType[] = [
    {
        id: uniqueId(),
        title: 'Modern',
        icon: IconAperture,
        href: '/dashboards/modern',
        chip: 'New',
        chipColor: 'secondary',
    },
    {
        id: uniqueId(),
        title: 'eCommerce',
        icon: IconShoppingCart,
        href: '/dashboards/ecommerce',
    },
]