while($row = $result->fetch_assoc()){
                        echo '<tr>
                            <!--Photos first-->
                            <td><center>s';
                            if(!empty(trim($row['photo']))){
                                    echo "<img src='.$row['photo'].' class='img-circle' height='100px' width='100px'> ";
                                    echo '<br>.$row["username"]. <br></td>';
                            }
                    }

unexpected $EOF, expecting TSTRINg TVARIABLE T NUM STRING