Fatal error: Uncaught Error: Call to undefined function create_function() in /home/httpd/vhosts/fenergie.ch/httpdocs/wp-content/plugins/booking/lib/wpdev-booking-widget.php:170
Stack trace:
#0 /home/httpd/vhosts/fenergie.ch/httpdocs/wp-content/plugins/booking/lib/wpbc-include.php(22): require_once()
#1 /home/httpd/vhosts/fenergie.ch/httpdocs/wp-content/plugins/booking/lib/wpbc.php(62): require_once('/home/httpd/vho...')
#2 /home/httpd/vhosts/fenergie.ch/httpdocs/wp-content/plugins/booking/lib/wpbc.php(41): Booking_Calendar->includes()
#3 /home/httpd/vhosts/fenergie.ch/httpdocs/wp-content/plugins/booking/lib/wpbc.php(138): Booking_Calendar::getInstance()
#4 /home/httpd/vhosts/fenergie.ch/httpdocs/wp-content/plugins/booking/lib/wpbc.php(143): wpbookingcalendar()
#5 /home/httpd/vhosts/fenergie.ch/httpdocs/wp-content/plugins/booking/wpdev-booking.php(69): require_once('/home/httpd/vho...')
#6 /home/httpd/vhosts/fenergie.ch/httpdocs/wp-settings.php(428): include_once('/home/httpd/vho...')
#7 /home/httpd/vhosts/fenergie.ch/httpdocs/wp-config.php(89): require_once('/home/httpd/vho...')
#8 /home/httpd/vhosts/fenergie.ch/httpdocs/wp-load.php(50): require_once('/home/httpd/vho...')
#9 /home/httpd/vhosts/fenergie.ch/httpdocs/wp-blog-header.php(13): require_once('/home/httpd/vho...')
#10 /home/httpd/vhosts/fenergie.ch/httpdocs/index.php(17): require('/home/httpd/vho...')
#11 {main}
  thrown in /home/httpd/vhosts/fenergie.ch/httpdocs/wp-content/plugins/booking/lib/wpdev-booking-widget.php on line 170