Warning: Undefined array key "site_cd" in C:\wamp64\www\cmms_st_dev\get_contract_service_dropdown.php on line 7

Fatal error: Uncaught TypeError: sqlsrv_query(): Argument #1 ($conn) must be of type resource, false given in C:\wamp64\www\cmms_st_dev\get_contract_service_dropdown.php:19 Stack trace: #0 C:\wamp64\www\cmms_st_dev\get_contract_service_dropdown.php(19): sqlsrv_query(false, 'SELECT \tsup_mst...') #1 {main} thrown in C:\wamp64\www\cmms_st_dev\get_contract_service_dropdown.php on line 19