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datagrid error message with IIS

I am testing a trial version of the PRO DHTMLXdatagrid.
I am using the Connector to retrieve data have been getting the following error message:

PHP Notice: Undefined property: GridConnector::$query in C:\Inetpub\wwwroot\assets\dhtmlxGrid\dhtmlxConnector\codebase\base_connector.php on line 106

The error seems to be produced when I call the "render_sql" method of the Datagrid.

Are any PHP modules required such as PDO?


Any help or advice appreciated.

Thanks in advance.

Please try to add next command as first line of custom connector file

error_reporting(E_ALL ^ E_NOTICE);

It will instruct to ignore NOTICE level messages, so they will not break output.
( with default settings, component able to control output and prevent any unnecessary messages during data generation, but seems in your case it need to forced directly )

>>Are any PHP modules required such as PDO?
By default it uses "mysql" extensions, which most probably included by default. ( PDO can be supported as well , through additional extension ) 

Excellent, thanks again for your support.