Fatal error: Uncaught TypeError: usort(): Argument #1 ($array) must be of type array, null given in /app/functions.php:55
Stack trace:
#0 /app/functions.php(55): usort()
#1 /app/pages/index.php(109): getArticles()
#2 /app/index.php(33): include('...')
#3 {main}
thrown in /app/functions.php on line 55