...
Fatal error: Uncaught Error: Call to undefined function esc_html() in /var/www/html1/wp-content/plugins/salon-booking-system/views/admin/_calendar_day_title_assistant.php:5 Stack trace: #0 {main} thrown in /var/www/html1/wp-content/plugins/salon-booking-system/views/admin/_calendar_day_title_assistant.php on line 5