i am trying to do spa and i am kind of stacking in this code

import AbstractView from "./AbstractView.js";

export default class extends AbstractView {
    constructor(params) {
        super(params);
        this.setTitle("Profile");
    }

    async getHtml() {
        return `
            <main>
                <center>
                <div class="profile-page">
                    <img src="" alt="astro" style="border-radius: 50%;margin-right: 15px;">
                    <h1 style="font-size: 20px;"><%= client.user.username %></h1>
                    <h3>Select server to start managing</h3>
                    <br>
                    <a href="" target="_blank" rel="noopener noreferrer"><button class="button_support">Support</button></a>
                </div>
                </center>
            </main>
        `;
    }
}

This is taking from github source and what i am trying to do is i want to show ejs variable in the html and this what happen: problem if you have any question about the code ask and a will text you back thank you!