Fatal error

Hi, I’m getting this error
the plugin worked at first and suddenly was destroyed

Fatal error: Uncaught Error: Call to undefined function ot_settings_id() in /home/USER/domains/DOMAIN.COM/public_html/wp-content/plugins/wp-radio/includes/prince-settings/includes/frontend-functions.php:144 Stack trace: #0 /home/USER/domains/DOMAIN.COM/public_html/wp-content/plugins/wp-radio/includes/prince-settings/includes/frontend-functions.php(66): prince_wpml_filter() #1 /home/USER/domains/DOMAIN.COM/public_html/wp-content/plugins/wp-radio/includes/enqueue.php(33): prince_get_option() #2 /home/USER/domains/DOMAIN.COM/public_html/wp-includes/class-wp-hook.php(287): wp_radio_frontend_scripts() #3 /home/USER/domains/DOMAIN.COM/public_html/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters() #4 /home/USER/domains/DOMAIN.COM/public_html/wp-includes/plugin.php(478): WP_Hook->do_action() #5 /home/USER/domains/DOMAIN.COM/public_html/wp-includes/script-loader.php(2294): do_action() #6 /home/USER/domains/DOMAIN.COM/public_html/wp-includes/class-wp-hook.php(287): wp_enqueue_scripts() #7 /home/USER/domains/DOMAIN.COM/public_html/wp-includ in /home/USER/domains/DOMAIN.COM/public_html/wp-content/plugins/wp-radio/includes/prince-settings/includes/frontend-functions.php on line 144

i try to reinstll / delete all data from db but nothing works..