我正在一个选项页面上创建wordpress主题。我已经自定义了默认的do\\u settings\\u字段和do\\u settings\\u sections函数。我的字段显示良好，但当我试图保存它时，它不会保存。

function amna_theme_options_page () {
wp_enqueue_style( \'theme-options-css\', get_template_directory_uri() . \'/inc/admin/assets/css/theme-options-css.css\' );
settings_errors(); 
?>
<div class="wrap flex-tab">
    <form action=\'\' method=\'post\' class="amna-fields">
        <?php 
        amna_do_settings_fields(\'amna-fields-group\', \'theme_amna\');
        amna_do_settings_sections(\'theme_amna\'); 
        
        submit_button();
        ?>
    </form>
</div>
<?php }

function amna_do_settings_sections($page) {
global $wp_settings_sections, $wp_settings_fields;

if ( !isset($wp_settings_sections) || !isset($wp_settings_sections[$page]) )
    return;

foreach( (array) $wp_settings_sections[$page] as $section ) {
    echo "<h3>{$section[\'title\']}</h3>\\n";
    call_user_func($section[\'callback\'], $section);
    if ( !isset($wp_settings_fields) ||
         !isset($wp_settings_fields[$page]) ||
         !isset($wp_settings_fields[$page][$section[\'id\']]) )
            continue;
    echo \'<div class="settings-form-wrapper">\';
    amna_do_settings_fields($page, $section[\'id\']);
    echo \'</div>\';
}
}

function amna_do_settings_fields($page, $section) {
global $wp_settings_fields;

if ( ! isset( $wp_settings_fields[ $page ][ $section ] ) ) {
    return;
}

foreach ( (array) $wp_settings_fields[$page][$section] as $field ) { ?>
    <div class="settings-form-row flex-tab">
        
        <?php if ( !empty($field[\'args\'][\'label_for\']) )
            echo \'<p><label for="\' . $field[\'args\'][\'label_for\'] . \'">\' .
                $field[\'title\'] . \'</label><br />\';
        else
        call_user_func($field[\'callback\'], $field[\'args\']);
        echo \'</p>\';
    echo \'</div>\';
}
}