# Document getElementById ("mattermostView0") returns null

**URL:** <https://forum.mattermost.com/t/document-getelementbyid-mattermostview0-returns-null/11780>\
**Category:** Troubleshooting\
**Created:** [June 4, 2021, 11:46am UTC](https://forum.mattermost.com/t/document-getelementbyid-mattermostview0-returns-null/11780 "2021-06-04T11:46:11Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![lapaz17](https://avatars.discourse-cdn.com/v4/letter/l/858c86/32.png) [@lapaz17](https://forum.mattermost.com/u/lapaz17)\
**Post date:** [June 4, 2021, 11:46am UTC](https://forum.mattermost.com/t/document-getelementbyid-mattermostview0-returns-null/11780/1 "2021-06-04T11:46:11Z")

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I run “Npm start” and open dev-tools inside the desktop app. When I try to get mattermostView0, it returns null. What might be the cause?  
Here is the screenshot:

 ![Screenshot from 2021-06-04 14-45-24](https://us1.discourse-cdn.com/flex020/uploads/mattermost/original/2X/d/d49057a55f88a9ccb33b2a3fa179df58e0bcc2be.png)

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<div class="post-metadata">

**Author:** ![lapaz17](https://avatars.discourse-cdn.com/v4/letter/l/858c86/32.png) [@lapaz17](https://forum.mattermost.com/u/lapaz17)\
**Post date:** [June 5, 2021, 10:57am UTC](https://forum.mattermost.com/t/document-getelementbyid-mattermostview0-returns-null/11780/2 "2021-06-05T10:57:27Z")

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Asked on community.mm . Can be closed.