我正在开发一个插件。。。一切都很好，但突然当我试图保存插件设置时。。。我发现了一个错误，该错误表示找不到页面选项。。

我在寻找一些答案，但没有一个解决我的错误。。。下面是生成设置页面并将选项保存在数据库中的一些代码：

admin.php

<?php
/**
 *
 * This file contains the necesary functions to display the admin area of the plugin
 *
 * @author  Ezequiel Cattaneo <[email protected]>
 *
 * @link    https://webstower.com.ar/wtdomcheck
 * @since   1.0.0
 *
 **/

require_once WTDOMCHECK_PLUGIN_DIR.\'admin/class/class-admin.php\';

$wtdomadmin = \'\';

//All the magic is done here!
if ( class_exists(\'admin\') ) {
    
    $wtdomadmin = new admin();
    $wtdomadmin->WTRegister();

}
?>

class_admin.php

function __construct() 
    {

        //Instantiate the API that will construct our admin pages
        $this->settings = new ApiWpadmin();

        //Array of pages to create
        $this->pages = [
            [
                \'page_title\' => \'My plugin settings page\', 
                \'menu_title\' => \'Settings page\', 
                \'capability\' => \'manage_options\', 
                \'menu_slug\'  => \'wtdomaincheck\', 
                \'callback\'   => array($this, \'WTLoadSettingTemplate\'), 
                \'icon_url\'   => \'dashicons-admin-generic\', 
                \'position\'   => 117
            ]
        ];
        
    
        //Register the settings in the database
        add_action(\'admin_init\', array($this, \'WTSaveSettings\'));
    }



    //
    // PARAM
    // Register all the actions & filters for wp-admin
    //
    public function WTRegister() 
    {

        $this->settings->
            WTAddPages( $this->pages ) ->
            WTWithSubPage( \'Dashboard\' ) ->
            WTAddSubPages( $this->subpages ) ->
            WTRegister();

    }


    //
    // PARAM
    // Register the settings values in the database
    //
    public function WTSaveSettings()
    {
            $wt_options = array (
                \'display-on-free\'       => $_POST[\'display-on-free\'],
                \'display-on-registered\' => $_POST[\'display-on-registered\'],
                \'display-on-invalid\'    => $_POST[\'display-on-invalid\'],
                \'before-whois-output\'   => $_POST[\'before-whois-output\'],
                \'after-whois-output\'    => $_POST[\'after-whois-output\'],
                \'callurl\'               => $_POST[\'callurl\'],
                \'varname\'               => $_POST[\'varname\'],
                \'resp-free-domain\'      => $_POST[\'resp-free-domain\'],
                \'resp-registered-domain\'=> $_POST[\'resp-registered-domain\'],
                \'resp-invalid-domain\'   => $_POST[\'resp-invalid-domain\'],
                \'custom-css\'            => $_POST[\'custom-css\'],
                \'license-key\'           => $_POST[\'license-key\'],
                \'style-box-bgcolor\'     => $_POST[\'style-box-bgcolor\'],
                \'style-www-color\'       => $_POST[\'style-www-color\'],
                \'style-button-color\'    => $_POST[\'style-button-color\'],
                \'style-button-bgcolor\'  => $_POST[\'style-button-bgcolor\'],
                \'style-result-color\'    => $_POST[\'style-result-color\'],
                \'style-result-bgcolor\'  => $_POST[\'style-result-bgcolor\']
            );

            if (isset($_POST[\'enable-multiple-search\'])) 
                $wt_options[] = array(\'enable-multiple-search\' => $_POST[\'enable-multiple-search\'] );

            if (isset($_POST[\'show-www\'])) 
                $wt_options[] = array(\'show-www\' => $_POST[\'show-www\'] );

            if (isset($_POST[\'show-whois-output\'])) 
                $wt_options[] = array(\'show-whois-output\' => $_POST[\'show-whois-output\'] );

            update_option( \'wtdomaincheck\', $wt_options );
    }



    //
    // PARAM
    // Loads the template that shows the settings page
    //
    public function WTLoadSettingTemplate()
    {
        
        require_once WTDOMCHECK_PLUGIN_DIR.\'admin/html/settings.php\';
    }

?>

settings.php

<form method="post" action="options.php">

        <?php settings_fields( \'wtdomaincheck\' ); ?>

        <div class="row border">
            
            <div class="col-3 border-right pt-3 pb-3">
                <div id="pillTabs" class="nav flex-column nav-pills" id="v-pills-tab" role="tablist" aria-orientation="vertical">
                    <?php
                    //Build Pill Sections
                    echo $wtdomadmin->WTBuildPillTabs($sections);
                    ?>
                </div>
            </div>

            <div class="col-9 pt-3">
                <div class="tab-content" id="v-pills-tabContent">
                    <?php
                    //Build Pill Sections
                    echo $wtdomadmin->WTBuildPillPanes($sections);
                    ?>
                </div>
            </div>
        
        </div>
        
        <div class=\'form-group row mx-auto mt-3\'>
            <div class="col-lg-12 pr-0">
                <input type="submit" class="btn btn-primary float-right" value="<?php _e(\'Save Changes\') ?>" />
            </div>
        </div>

    </form>

安装插件时，会在wp\\u options表中创建选项记录。将显示设置页面。。但是当我试图保存更改时。。。是屏幕上显示“找不到选项”页面的位置。。。

任何帮助都将不胜感激。