Warning: Undefined array key "site_cd" in C:\wamp64\www\cmms_kpj_dev\servicesDropdown.php on line 16

Fatal error: Uncaught TypeError: sqlsrv_query(): Argument #1 ($conn) must be of type resource, false given in C:\wamp64\www\cmms_kpj_dev\servicesDropdown.php:20 Stack trace: #0 C:\wamp64\www\cmms_kpj_dev\servicesDropdown.php(20): sqlsrv_query(false, 'select * from\xC2\xA0...') #1 {main} thrown in C:\wamp64\www\cmms_kpj_dev\servicesDropdown.php on line 20