# TooltipService gets exception

**URL:** <https://forum.radzen.com/t/tooltipservice-gets-exception/5477>\
**Category:** Radzen.Blazor Components\
**Created:** [October 29, 2020, 8:32pm UTC](https://forum.radzen.com/t/tooltipservice-gets-exception/5477 "2020-10-29T20:32:17Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Agefer](https://forum.radzen.com/user_avatar/forum.radzen.com/agefer/32/3308_2.png) [@Agefer](https://forum.radzen.com/u/Agefer)\
**Post date:** [October 29, 2020, 9:01pm UTC](https://forum.radzen.com/t/tooltipservice-gets-exception/5477/2 "2020-10-29T21:01:13Z")

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Dear @cglick

What are the exceptions? Please give an example.

Likely similar? :  
[http://forum.radzen.com/t/tooltip-tooltip-show-navigateto-cannot-read-property-removechild-of-null/5466?u=agefer](http://forum.radzen.com/t/tooltip-tooltip-show-navigateto-cannot-read-property-removechild-of-null/5466)

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