Fatal error: Uncaught TypeError: extract(): Argument #1 ($array) must be of type array, false given in /var/www/html/includes/oxygen.lib.php:97 Stack trace: #0 /var/www/html/includes/oxygen.lib.php(97): extract(false) #1 /var/www/html/physiology/OxygenDataList.php(71): getO2AverageDisplay(NULL) #2 {main} thrown in /var/www/html/includes/oxygen.lib.php on line 97