# Webdev module always returns a 404 error in trial mode

**URL:** <https://forum.inductiveautomation.com/t/webdev-module-always-returns-a-404-error-in-trial-mode/61153>\
**Category:** Ignition\
**Created:** [June 24, 2022, 7:56am UTC](https://forum.inductiveautomation.com/t/webdev-module-always-returns-a-404-error-in-trial-mode/61153 "2022-06-24T07:56:20Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Dani\_Tell](https://avatars.discourse-cdn.com/v4/letter/d/4bbf92/32.png) [@Dani\_Tell](https://forum.inductiveautomation.com/u/Dani_Tell)\
**Post date:** [June 24, 2022, 7:56am UTC](https://forum.inductiveautomation.com/t/webdev-module-always-returns-a-404-error-in-trial-mode/61153/1 "2022-06-24T07:56:20Z")

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Hi, I am trying to make a call to the Ignition API (WebDev Module).

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/8/8/887d8c92488136a66c60273258d347674a43bb44.png)  
 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/8/f/8fa2c8f6d69c3520c893668a854da124890d493f.png)  
 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/b/9/b9987a85a8b101add8881b56278a65374ef60954.png)

Here are the steps I’m trying to get my tag from Ignition.

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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [June 24, 2022, 12:37pm UTC](https://forum.inductiveautomation.com/t/webdev-module-always-returns-a-404-error-in-trial-mode/61153/2 "2022-06-24T12:37:31Z")

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WebDev runs in the gateway. It has no connection to any user interface. Move the UI data you wish to serve into a tag or other gateway-reachable resource.

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**Author:** ![bkarabinchak.psi](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/bkarabinchak.psi/32/83567_2.png) [@bkarabinchak.psi](https://forum.inductiveautomation.com/u/bkarabinchak.psi)\
**Post date:** [June 24, 2022, 12:37pm UTC](https://forum.inductiveautomation.com/t/webdev-module-always-returns-a-404-error-in-trial-mode/61153/3 "2022-06-24T12:37:40Z")

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So one thing is that definitely will not work is that you are trying to call `event.source.parent.getComponent("Table")`, but if you look at the parameters you get from `doGet(rquest, session)` you’ll notice that event is not one of them, so you cannot reference something like this. An event is something that happens in a vision client. You probably want  
[system.tag.browse - Ignition User Manual 8.0 - Ignition Documentation](https://docs.inductiveautomation.com/display/DOC80/system.tag.browse) instead.