Warning: Undefined variable $pdo in /home/me5ir2/public_html/pages/inc/teamcontent.php on line 30

Fatal error: Uncaught TypeError: retrieveDataFromMySQL(): Argument #1 ($pdo) must be of type PDO, null given, called in /home/me5ir2/public_html/pages/inc/teamcontent.php on line 30 and defined in /home/me5ir2/public_html/conf.php:19 Stack trace: #0 /home/me5ir2/public_html/pages/inc/teamcontent.php(30): retrieveDataFromMySQL() #1 /home/me5ir2/public_html/teams.php(5): require_once('/home/me5ir2/pu...') #2 {main} thrown in /home/me5ir2/public_html/conf.php on line 19