This is the single.php file.

Hello world!

Fatal error: Uncaught Error: Call to undefined function the_field() in /home/www/moefishandchips.com.au/wp-content/themes/CN Ms Fish & Chips/single.php:8 Stack trace: #0 /home/www/moefishandchips.com.au/wp-includes/template-loader.php(106): include() #1 /home/www/moefishandchips.com.au/wp-blog-header.php(19): require_once('/home/www/moefi...') #2 /home/www/moefishandchips.com.au/index.php(17): require('/home/www/moefi...') #3 {main} thrown in /home/www/moefishandchips.com.au/wp-content/themes/CN Ms Fish & Chips/single.php on line 8