Won’t Activate Fatal Error

When trying to install this plugin, I am getting this error:

Fatal error: Uncaught Error: Call to undefined function create_function() in /home2/tvjihjmy/public_html/wp-content/plugins/getyourguide-widget/getyourguide-widget.php:60 Stack trace: #0 /home2/tvjihjmy/public_html/wp-admin/includes/plugin.php(2318): include_once() #1 /home2/tvjihjmy/public_html/wp-admin/plugins.php(192): plugin_sandbox_scrape(‘getyourguide-wi…’) #2 {main} thrown in?/home2/tvjihjmy/public_html/wp-content/plugins/getyourguide-widget/getyourguide-widget.php?on line?60

Head tags don’t seem to be working either.