# Cannot read property 'addEventListener' of null

**URL:** <https://forum.radzen.com/t/cannot-read-property-addeventlistener-of-null/8123>\
**Category:** Radzen.Blazor Components\
**Created:** [June 9, 2021, 11:10am UTC](https://forum.radzen.com/t/cannot-read-property-addeventlistener-of-null/8123 "2021-06-09T11:10:08Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![no-bu](https://forum.radzen.com/letter_avatar_proxy/v4/letter/n/6de8d8/32.png) [@no-bu](https://forum.radzen.com/u/no-bu)\
**Post date:** [June 9, 2021, 11:10am UTC](https://forum.radzen.com/t/cannot-read-property-addeventlistener-of-null/8123/1 "2021-06-09T11:10:08Z")

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Please forgive the inconvenient sentences for machine translation.  
For pages using Radzen Component, if you switch between pages at high speed, an error will occur at the part shown in the figure.  
Is there a way around this error?

Operating environment

- .NET Core 3.0 Blazor WebAssembly
- Radzen version: 3.5.0

 ![error1](https://forum.radzen.com/uploads/default/original/2X/8/876b9503753757b83099bcdf9db92102f0d34cdf.png)

 ![error2](https://forum.radzen.com/uploads/default/original/2X/e/e80131f3ee580cae6492d7023bb786bb70d6f7fc.png)

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**Author:** ![enchev](https://forum.radzen.com/user_avatar/forum.radzen.com/enchev/32/16_2.png) [@enchev](https://forum.radzen.com/u/enchev)\
**Post date:** [June 9, 2021, 11:12am UTC](https://forum.radzen.com/t/cannot-read-property-addeventlistener-of-null/8123/2 "2021-06-09T11:12:53Z")

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Hey @no-bu,

Thanks for the report! It will be fixed in our next update tomorrow - it's already in the master branch:

> <https://github.com/radzenhq/radzen-blazor/commit/aa4ff53d62209976e604703169f023923f2d326d>

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<div class="post-metadata">

**Author:** ![no-bu](https://forum.radzen.com/letter_avatar_proxy/v4/letter/n/6de8d8/32.png) [@no-bu](https://forum.radzen.com/u/no-bu)\
**Post date:** [June 9, 2021, 11:28am UTC](https://forum.radzen.com/t/cannot-read-property-addeventlistener-of-null/8123/3 "2021-06-09T11:28:51Z")

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Hi @enchev  
Thank you immediately answer. 😃