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Fatal error: Uncaught ArgumentCountError: Too few arguments to function add_category_to_single(), 1 passed in /home/divewise/darksidediving.co.uk/wp-includes/plugin.php on line 235 and exactly 2 expected in /home/divewise/darksidediving.co.uk/wp-content/themes/darkside/header.php:53 Stack trace: #0 /home/divewise/darksidediving.co.uk/wp-includes/plugin.php(235): add_category_to_single(Array) #1 /home/divewise/darksidediving.co.uk/wp-includes/post-template.php(750): apply_filters('body_class', Array, Array) #2 /home/divewise/darksidediving.co.uk/wp-includes/post-template.php(541): get_body_class(Array) #3 /home/divewise/darksidediving.co.uk/wp-content/themes/darkside/header.php(65): body_class() #4 /home/divewise/darksidediving.co.uk/wp-includes/template.php(572): require_once('/home/divewise/...') #5 /home/divewise/darksidediving.co.uk/wp-includes/template.php(531): load_template('/home/divewise/...', true) #6 /home/divewise/darksidediving.co.uk/wp-includes/general-template.php(45): locate_template(Array, true) #7 /home/d in /home/divewise/darksidediving.co.uk/wp-content/themes/darkside/header.php on line 53