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Warning: Undefined variable $site_cd in C:\wamp64\www\ETKA\insert_work_order_file.php on line 45

Fatal error: Uncaught TypeError: sqlsrv_query(): Argument #1 ($conn) must be of type resource, false given in C:\wamp64\www\ETKA\insert_work_order_file.php:47 Stack trace: #0 C:\wamp64\www\ETKA\insert_work_order_file.php(47): sqlsrv_query(false, 'Select\t\tdoc_no ...') #1 {main} thrown in C:\wamp64\www\ETKA\insert_work_order_file.php on line 47