Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, null given in /var/www/www/moduly/modul_rozvrh.php:16 Stack trace: #0 /var/www/www/index.php(74): require() #1 {main} thrown in /var/www/www/moduly/modul_rozvrh.php on line 16