Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, null given in /home/inspot/hermosoacademy/www/gwangju_n/03_community/referenceRoom_list.php:51 Stack trace: #0 {main} thrown in /home/inspot/hermosoacademy/www/gwangju_n/03_community/referenceRoom_list.php on line 51