# Taking too much time to fill a webform raises an error

**URL:** <https://discuss.workflowgen.com/t/taking-too-much-time-to-fill-a-webform-raises-an-error/146>\
**Category:** Visual Studio Web Forms\
**Created:** [August 1, 2007, 12:59am UTC](https://discuss.workflowgen.com/t/taking-too-much-time-to-fill-a-webform-raises-an-error/146 "2007-08-01T00:59:16Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![wfg-admin](https://yyz2.discourse-cdn.com/flex030/user_avatar/discuss.workflowgen.com/wfg-admin/32/714_2.png) [@wfg-admin](https://discuss.workflowgen.com/u/wfg-admin)\
**Post date:** [August 1, 2007, 12:59am UTC](https://discuss.workflowgen.com/t/taking-too-much-time-to-fill-a-webform-raises-an-error/146/1 "2007-08-01T00:59:16Z")

</div>

If you use an older version of WorkflowGen.My 2.1.5, then the error is: `Object reference not set to an instance of an object.`

If you use the version 2.1.5 of WorkflowGen.My or later, then the error is `Session Timeout`.

To avoid this error message, increase your session timeout in IIS for your web form, or do not use the session object in your webform by adding the following line in the constructor of your web form:

```auto
 This.IsSessionLess = true;

```