服务器和wamp中的警报显示为错误

Question

I have changed from app serv server to wamp server But show me mistakes I think it alerts to appear as errors For example, the first code doesn't work in wamp server but it's work in appserv the second code work in both server I am want to make the first code work in wamp server

1-<?php include'config.php';
$sql=mysqli_query($connect,"SELECT * FROM users WHERE id='1' ") or die();
while($row=mysqli_fetch_array($sql,MYSQLI_ASSOC)){
?><tr><td><?php echo $row['username']; ?></td></tr>
<? } ?>
2-<?php include'config.php';
$sql=mysqli_query($connect,"SELECT * FROM users WHERE id='1' ") or die();
while($row=mysqli_fetch_array($sql,MYSQLI_ASSOC)){

echo"<tr><td>echo $row[username]</td></tr>";
} ?>