Fatal error: Calling member function check_capabilities () on non-object

I wrote this code in functions.php to add a section to my theme personalization. But when I want to open "localhost / wordpress / wp-admin / customize.php? Theme = eye-theme" to see my result, I see this error:

Fatal error: Calling member function check_capabilities()

for non-object in C: \ xampp \ htdocs \ xampp \ wordpress \ wp-includes \ class-wp-customize-control.php on line 233

This is my functions.php :

<?php

function eyetheme_register_theme_customizer($wp_customizer) {

    $wp_customizer->add_section(
        'eyetheme_display_options',
        array(
            'title'     => 'Display Options',
            'priority'  => 200
        )
    );

    $wp_customizer->add_setting(
        'eyetheme_link_color',
        array(
            'default'   => '#000000',
            'transport' => 'postMessage'
       )
    );

    $wp_customizer->add_control(
        'eyetheme_link_control',
        array(
            'section'   => 'eyetheme_display_options',
            'label'     => 'Link Color',
            'type'      => 'text'
       )
    );

}
add_action('customize_register', 'eyetheme_register_theme_customizer');