Warning: Undefined array key “id” in C:Program FilesAmppswwwadminindex.php on line 182 [duplicate]

I have a problem, I want to make changes to a certain user’s database table. I managed to do this by opening another page.

<td><a href="includes/update.php?id=<? echo $user['id']?>" class="edit">Edit href</a></td>

The page will open as follows
page code img

But through the modal window, when I try to open the data, I get an error message: Warning: Undefined array key “id” in C:Program FilesAmppswwwadminindex.php on line 182

                <td><button tupe="hidden" name="user_id" onclick="window.myDialog.showModal()" value="<? echo $user['id']?>" class="regbtn">Edit modal</button></td>
            </tr>
            <?
        }
        ?>
        </tbody>
        </table>
                    <div class="left">
                        <dialog id="myDialog" class="modal">
                            <div class="reg-form">
                                <h6>Change the data</h6>
                                <button onclick="closeDialog()">x</button>
                                <script>
                                    var x = document.getElementById("myDialog"); 
                                    function showDialog() { 
                                    x.show(); 
                                    } 
                                    function closeDialog() { 
                                    x.close(); 
                                    } 
                                </script>
                                <form method="POST">
                                    <?
                                        $id = $_GET['id'];
                                        $query = mysqli_query($connect, query: "SELECT * from `users` where ID='$id'");
                                        while($row = mysqli_fetch_array($query)) {
                                    ?>
                                    <div class="reg-box">
                                        <input type="text" value="<? echo $row["lastname"]?>" name="lastname" placeholder="Last Name">
                                    </div>
                                    <div class="reg-box">
                                        <input type="text" value="<? echo $row["name"]?>" name="name" placeholder="Name">
                                    </div>
                                    <div class="reg-box">
                                        <input type="text" value="<? echo $row["fathername"]?>" name="fathername" placeholder="Father Name">
                                    </div>
                                    <div class="reg-box">
                                        <input type="number" value="<? echo $row["code"]?>" name="code" placeholder="Code">
                                    </div>
                                    <div class="reg-box">
                                        <input type="text" value="<? echo $row["username"]?>" name="username" placeholder="Login">
                                    </div>
                                    <div class="reg-box">
                                        <input type="number" value="<? echo $row["password"]?>" name="password" placeholder="Password">
                                    </div>
                                    <? } ?>    
                                    <button tupe="reg" class="btn">Edit</button>
                                </form>
                            </div>
                            <style type="text/css">
                                dialog {
                                    margin-inline: auto;
                                    margin-block-start: 120px;
                                    background: transparent;
                                    box-shadow: 0 0 10px rgba(0, 0, 0, 0.211);
                                    border: none;
                                    border-radius: 1rem;
                                }
                                dialog::backdrop {
                                    background-color: rgba(0, 0, 0, 0.2);
                                }
                            </style>
                        </dialog>
                    </div>
    </div>