I am making a user login form for my website and this error pops up Error Message my code is:
<?php if( isset($user) ): ?>
    <br />Welcome <?= $user['username']; ?>
    <br /><br />You are successfully logged in!
    <br /><br />
    <a href="logout.php">Logout?</a>
<?php else: ?>
<h1>Please Login or Regester</h1>
<a href="login.php">Login</a> or
<a href="register.php">Register</a>
<?php endif; ?>
can someone help me if I need to provide anymore code i will do so to fix this error
 
    