Fatal error: Uncaught TypeError: sqlsrv_begin_transaction(): Argument #1 ($conn) must be of type resource, false given in C:\wamp64\www\vermi_mobile\9.1\off_update_workorder.php:18 Stack trace: #0 C:\wamp64\www\vermi_mobile\9.1\off_update_workorder.php(18): sqlsrv_begin_transaction(false) #1 {main} thrown in C:\wamp64\www\vermi_mobile\9.1\off_update_workorder.php on line 18