致命错误：在null上调用成员函数add_section（）

Question

我正在尝试向面板中添加一个部分，以为延迟加载图像选项添加一个部分。我不断收到此错误

  

致命错误：在第91行的null上调用成员函数add_section（）。

我在其他文件中具有面板设置。

$wp_customize->add_panel(
'aviation_theme_options',
array(
    'priority' => 7,
    'capability' => 'edit_theme_options',
    'theme_supports' => '',
    'title' => esc_html__('Theme Option', 'aviation'),
)

）;

出现此错误的文件在该部分中。

/**
 * Theme options.
 */
$wp_customize->add_section(
    'lazy_load_options', array(
        'title'    => __( 'Lazy-load images', 'aviation' ),
                    'capability' => 'edit_theme_options',
        'panel' => 'aviation_theme_options',
        'priority' => 6,

    )
);

if ( function_exists( 'aviation_lazyload_images' ) ) {
    $wp_customize->add_setting(
        'lazy_load_media', array(
            'default'           => 'lazyload',
            'sanitize_callback' => 'aviation_sanitize_lazy_load_media',
            'transport'         => 'postMessage',

        )
    );

    $wp_customize->add_control(
        'lazy_load_media', array(
            'label'           => __( 'Lazy-load images', 'aviation' ),
            'section'         => 'lazy_load_options',
                            'settings'        => 'lazy_load_media',
            'type'            => 'radio',
            'description'     => __( 'Lazy-loading images means images are loaded only when they are in view. Improves performance, but can result in content jumping around on slower connections.', 'aviation' ),
            'choices'         => array(
                'lazyload'    => __( 'Lazy-load on (default)', 'aviation' ),
                'no-lazyload' => __( 'Lazy-load off', 'aviation' ),
            ),
        )
    );
}

add_action( 'customize_register', 'aviation_customize_register' );