Warning: Undefined array key "assetno" in C:\wamp64\www\EDSB2\get_master_asset_list.php on line 3

Fatal error: Uncaught TypeError: sqlsrv_query(): Argument #1 ($conn) must be of type resource, false given in C:\wamp64\www\EDSB2\get_master_asset_list.php:58 Stack trace: #0 C:\wamp64\www\EDSB2\get_master_asset_list.php(58): sqlsrv_query(false, 'select \tast_mst...', Array, Array) #1 {main} thrown in C:\wamp64\www\EDSB2\get_master_asset_list.php on line 58