Warning: Undefined array key "site_cd" in C:\wamp64\www\CMMS_SEHSA\get_inventory_count_book_by_params.php on line 19

Fatal error: Uncaught TypeError: sqlsrv_query(): Argument #1 ($conn) must be of type resource, false given in C:\wamp64\www\CMMS_SEHSA\get_inventory_count_book_by_params.php:21 Stack trace: #0 C:\wamp64\www\CMMS_SEHSA\get_inventory_count_book_by_params.php(21): sqlsrv_query(false, 'SELECT site_cd\r...') #1 {main} thrown in C:\wamp64\www\CMMS_SEHSA\get_inventory_count_book_by_params.php on line 21