critical error

Hi i sent a ticket yesterday i have a critical error. the website was working fine, then when i logged on the next day i get this:

"Fatal error: Uncaught Error: Call to a member function get_image_id() on bool in /home/customer/www/shroompalumpa.com/public_html/wp-content/themes/umeno/framework/live-search/live-search.php:20 Stack trace: #0 /home/customer/www/shroompalumpa.com/public_html/wp-includes/class-wp-hook.php(308): umeno_live_search_script('') #1 /home/customer/www/shroompalumpa.com/public_html/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters(NULL, Array) #2 /home/customer/www/shroompalumpa.com/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #3 /home/customer/www/shroompalumpa.com/public_html/wp-includes/script-loader.php(2194): do_action('wp_enqueue_scri...') #4 /home/customer/www/shroompalumpa.com/public_html/wp-includes/class-wp-hook.php(308): wp_enqueue_scripts('') #5 /home/customer/www/shroompalumpa.com/public_html/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters(NULL, Array) #6 /home/customer/www/shroompalumpa.com/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #7 /home/customer/ in /home/customer/www/shroompalumpa.com/public_html/wp-content/themes/umeno/framework/live-search/live-search.php on line 20
There has been a critical error on this website.

please fix asap. ftp and link included in secret info