函数Admin :: edit（）的参数太少，

我是Codeigniter和php的新手，并且正在尝试创建Crud（更新）该如何解决？提前致谢

控制器：

{
    $data['title'] = 'Role';
    $data['user'] = $this->db->get_where('user', ['email' => $this->session->userdata('email')])->row_array();
    $data['user_role'] = $this->Role_model->GetId($id);

    $this->form_validation->set_rules('role', 'Role', 'required');

    if ($this->form_validation->run() == false) {

        $this->load->view('templates/header', $data);
        $this->load->view('templates/sidebar', $data);
        $this->load->view('templates/topbar', $data);
        $this->load->view('admin/edit', $data);
        $this->load->view('templates/footer');
    } else {
        $this->Role_model->EditRole();
        $this->session->set_flashdata('message', '<div class="alert alert-success" role="alert">Role Edited!</div>');
        redirect('admin/role');
    } 
}

查看：

    <?= $this->session->flashdata('message'); ?>
    <form action="<?= base_url('admin/edit/');?>" method="post">
        <input type="hidden" name="id" value="<?= $user_role['id']; ?>">
        <div class="form-group text-gray-900">
            <label for="role">Edit Role</label>
            <input type="text" class="form-control" id="role" name="Role" value="<?= $user_role['role']; ?>">
            <?= form_error('role', ' <small class="text-danger pl-3">', '</small>'); ?>
        </div>
</div>

它像这样显示

遇到未捕获的异常类型：ArgumentCountError

消息：函数Admin :: edit（）的参数太少，第532行的C：\ xampp \ htdocs \ KingflowWP2 \ system \ core \ CodeIgniter.php中传递了0