Toast function cannot find its div

Hello I have this error where the toast alert is not showing on the page when I log in but it is when I sign out, any idea why it does this? I tried multiple things like logging the toastLiveExample and the toastBody but it always returns null when I sign in showToast("text-bg-success", ${username}, you have successfully signed in! Check out your <a href="/profile/${username}">profile</a>!);

TypeError: Cannot read properties of null (reading ‘classList’)
at showToast (toast.js:6:20)
at HTMLDocument. (sign-in?id=…)

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">

  <title>GildNovel</title>
  <link rel="icon" type="icon" href="/images/icon.jpg" />

  <meta property="og:site_name" content="GildNovel" />
  <meta property="og:title" content="Novel and Manga Community" />
  <meta property="og:description"
    content="GildNovel is a platform where you can find a variety of books and novels up to your taste, specially made for manga-lovers and action lovers." />
  <meta property="og:image" content="/images/icon.jpg" />
  <meta property="og:image:type" content="image/png">
  <meta property="og:image:width" content="250">
  <meta property="og:image:height" content="250">

  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.4/css/all.min.css">
  <link rel="stylesheet" href="https://site-assets.fontawesome.com/releases/v6.1.1/css/all.css" />

  <link rel="preconnect" href="https://fonts.googleapis.com">
  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
  <link href="https://fonts.googleapis.com/css2?family=Bebas+Neue&display=swap" rel="stylesheet">

  <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" />

  <link rel="stylesheet" href="/gnCss" />
</head>
<style>
  /*Buttons*/
  .flex {
    display: flex;
    justify-content: center;
    flex-direction: column;
    align-items: center;
  }

  button {
    text-align: center;
    font-weight: bold;
    text-decoration: none;
    font-family: "Roboto", sans-serif;
    display: inline-block;
    border: none;
    border-radius: 16px;
    background-color: #2196f3;
    cursor: pointer;
    padding: 20px;
    font-size: 30px;
    color: white;
    margin: 0 auto;
    margin-bottom: 10px;
  }

  .discordButton {
    background-color: #7289da;
    color: #ffffff;
    border: none;
    border-radius: 15px;
    font-size: 25px;
    padding: 15px;
    cursor: pointer;
    transition: background-color 0.3s ease;
  }

  .discordButton:hover {
    background-color: #677bc4;
  }

  .googleButton {
    background-color: #fff;
    color: #000;
    border: none;
    border-radius: 15px;
    font-size: 25px;
    padding: 15px;
    cursor: pointer;
    transition: background-color 0.3s ease;
  }

  .googleButton:hover {
    background-color: #b7b7b7;
  }
</style>

<body>
  <div id="alert"></div>

  <div class="navbar">
    <a style="margin-left: 25px;" href="/home" class="navbar-text">Home</a>

    <form name="search" class="box" action="/explore" method="GET">
      <input type="text" name="search" style="width: 40vw;" placeholder="Explore..." />
      <i class="fas fa-search"></i>
    </form>

    <div class="nav-right">
      <a style="margin-right: 25px;" href="/premium" class="navbar-text">Premium</a>
      <a style="margin-right: 25px;" id="toggle" href="#" class="navbar-text"><i class="fa fa-sign-out"
          aria-hidden="true"></i></a>
      <a style="margin-right: 25px;" id="account" href="#" class="navbar-text"><i class="fas fa-user"></i></a>
    </div>
  </div>

  <script>
    if (typeof Storage !== "undefined") {
      if (localStorage.user) {
        let data = JSON.parse(localStorage.user);
        document.getElementById("account").href = `/profile/${data.username}`;
      } else {
        document.getElementById("toggle").innerHTML = '<i class="fa fa-sign-in" aria-hidden="true"></i>';
        document.getElementById("toggle").href = "/sign-in";
      }
    }

    document.getElementById("toggle").addEventListener("click", async (e) => {
      if (e.target.classList.contains('fa-sign-out')) {
        showToast("text-bg-success", "Signing you out.");
        localStorage.removeItem("user");
        await fetch('/logout', { method: 'POST', credentials: 'same-origin' })
        setTimeout(() => {
          window.location.reload();
        }, 3000);
      }
    });
  </script>

  <div class="header">
    <h1 class="bebas-neue-regular" style="font-size:15vw;">GILDNOVEL</h1>
    <p>Experience the full potential of our community by joining or signing in with Discord or Google!</p>
  </div>

  <div style="margin-top:50px;" class="flex">
    <button id="discordSignUp" class="discordButton">
      <i class="fa-brands fa-discord"></i> Sign in with Discord
    </button>
    <button id="googleSignIn" class="googleButton">
      <i class="fa-brands fa-google"></i> Sign in with Google
    </button>
  </div>

  <div class="header-no-image">
    <p>By signing in you agree to follow our <a href="/tos">Terms of Service</a></p>
  </div>

  <!--bootstrap code-->
  <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.min.js"></script>
  <!--alert code-->
  <script type="text/javascript" src="//code.jquery.com/jquery-1.11.0.min.js"></script>

  <script>
    $("#alert").load("/staticHtml/toast.html");
  </script>
  <!-- toast function -->
  <script src="/js/toast.js"></script>

  <script>
    const discordSignUpBtn = document.getElementById("discordSignUp");
    discordSignUpBtn.addEventListener("click", () => {
      const clientID = "1100495054063284354";
      const redirectURI = encodeURIComponent("https://novels-production.up.railway.app/auth/discord/callback");
      const scopes = encodeURIComponent("email identify");
      const url = `https://discord.com/oauth2/authorize?client_id=${clientID}&redirect_uri=${redirectURI}&response_type=code&scope=${scopes}`;
      window.location.href = url;
    });

    const googleSignUpBtn = document.getElementById("googleSignIn");
    googleSignUpBtn.addEventListener("click", () => {
      window.location.href = "https://novels-production.up.railway.app/auth/google";
    });
  </script>

  <script>
    document.addEventListener('DOMContentLoaded', async () => {
      try {
        const queryString = window.location.search;
        const urlParams = new URLSearchParams(queryString);
        const token = urlParams.get("token");

        if (token) {
          const id = urlParams.get("id");
          const username = urlParams.get("username");

          let params = {
            _id: id,
            username,
            token,
          };

          showToast("text-bg-success", `${username}, you have successfully signed in! Check out your <a href="/profile/${username}">profile</a>!`);
          localStorage.setItem("user", JSON.stringify(params));
        }
      } catch (err) {
        console.log(err)
        showToast("text-bg-danger", "Something went wrong");
      }
    });
  </script>
</body>

</html>
function showToast(toastType, message) {
  const toastLiveExample = document.getElementById("liveToast");
  const toastBody = document.getElementById("toastBody");
  const toastBootstrap = bootstrap.Toast.getOrCreateInstance(toastLiveExample);

  toastLiveExample.classList.add(toastType);
  toastBody.innerHTML = message;
  toastBootstrap.show();
}
<div class="toast-container position-fixed bottom-0 end-0 p-3">
  <div id="liveToast" class="toast align-items-center" role="alert" aria-live="assertive" aria-atomic="true">
    <div class="d-flex">
      <div class="toast-body" id="toastBody">Hello, world! This is a toast message.</div>
      <i class="fa fa-times me-2 m-auto" data-bs-dismiss="toast" aria-hidden="true"></i>
    </div>
  </div>
</div>