Php Sesssion Do not pull image

 <p><img src="<?php echo $_SESSION['picture']; ?>" alt="" 
       style="width:50px;height:50px;"></p>
<p>Bem vindo  <?php echo $_SESSION['username']; ?></p> 
<p>Esta Area é segura.</p>
<p><?php echo date('Y m d H:i:s', $_SESSION['time']); ?><p
<p><a href="dashboard.php">Dashboard</a></p>
<a href="logout.php">Sair</a>

Below the session pulls the USER name correctly when logged in, but the image is not loaded.

<p><img src="<?php echo $_SESSION['picture']; ?>" alt="" 
       style="width:50px;height:50px;"></p>
<p>Bem vindo  <?php echo $_SESSION['username']; ?></p> 
<p>Esta Area é segura.</p>
<p><?php echo date('Y m d H:i:s', $_SESSION['time']); ?><p
<p><a href="dashboard.php">Dashboard</a></p>
<a href="logout.php">Sair</a>