How to fix fatal error

[Chris]

I need a help to fix that error.

Fatal error: Uncaught Error: Class 'WP_Customize_Control' not found in /home3/aweirdoc/public_html/wp-content/plugins/jetpack/modules/related-posts/class.related-posts-customize.php:289 Stack trace: #0 /home3/aweirdoc/public_html/wp-content/plugins/jetpack/modules/related-posts.php(57): require_once() #1 /home3/aweirdoc/public_html/wp-includes/class-wp-hook.php(292): Jetpack_RelatedPosts_Module->action_on_load(") #2 /home3/aweirdoc/public_html/wp-includes/class-wp-hook.php(316): WP_Hook->apply_filters(", Array) #3 /home3/aweirdoc/public_html/wp-includes/plugin.php(484): WP_Hook->do_action(Array) #4 /home3/aweirdoc/public_html/wp-content/plugins/jetpack/class.jetpack.php(2081): do_action('jetpack_module_...') #5 /home3/aweirdoc/public_html/wp-includes/class-wp-hook.php(292): Jetpack::load_modules(") #6 /home3/aweirdoc/public_html/wp-includes/class-wp-hook.php(316): WP_Hook->apply_filters(NULL, Array) #7 /home3/aweirdoc/public_html/wp-includes/plugin.php(484): WP_Hook->do_action(Array) #8 /home3/aweirdoc/public_html/wp-s in /home3/aweirdoc/public_html/wp-content/plugins/jetpack/modules/related-posts/class.related-posts-customize.php on line 289