error_userNotFound.php

 <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">

<div class="container" style="width: 400px; margin-top: 130px;">
	<center>
		<img src="https://cdn.dribbble.com/users/1208688/screenshots/4563859/no-found.gif" alt="usernotfound" width="250px"> 
		<br>
		<br>
		<h3>Usuario não existe !</h3>
		<div style="margin-top: 20px;">
			<a href="index.php" class="btn btn-primary btn-sm" style="color: #fff;">voltar</a>
		</div>
		<div style="margin-top: 10px;">
			<a href="cadastro_usuario_externo.php" class="btn btn-success btn-sm" style="color: #fff;">Cadastrar novo usuario</a>
		</div>
	</center>
</div>