After upgrading to latest wordpress version all my menu disappeared.

Please treat as urgent its a live website.

Regards,

Dear sir,
Update wordpress 4.7 error:
Please go to folder: wp-content/themes/clickboom/lib find in files responsive_dropdown.php and responsive_dropdown_sidebar.php function function Flytheme_MenuRes_Filter , add code:
if( !isset( $args['flytheme_resmenu'] ) ){
return $args;
}
Refer here:
prntscr.com/dh52q4

Thanks.

Thanks it worked , but what was the issue btw.

Dear sir,
Sorry, it is error update in our theme.
Please feel free to contact me if you are in need of further assistance and we would be happy to assist you.

Thanks.