# Flutter zoom video sdk error

**URL:** <https://devforum.zoom.us/t/flutter-zoom-video-sdk-error/100759>\
**Category:** Flutter\
**Created:** [December 26, 2023, 11:34am UTC](https://devforum.zoom.us/t/flutter-zoom-video-sdk-error/100759 "2023-12-26T11:34:40Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![thinakaran.s](https://avatars.discourse-cdn.com/v4/letter/t/b5a626/32.png) [@thinakaran.s](https://devforum.zoom.us/u/thinakaran.s)\
**Post date:** [December 26, 2023, 11:34am UTC](https://devforum.zoom.us/t/flutter-zoom-video-sdk-error/100759/1 "2023-12-26T11:34:40Z")

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onError, error: ZoomVideoSDKError\_JoinSession\_Token\_NoSessionName

Why do I got this error after the Join Session successfully

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**Author:** ![rehema.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/rehema.zoom/32/40323_2.png) [@rehema.zoom](https://devforum.zoom.us/u/rehema.zoom)\
**Post date:** [December 28, 2023, 4:25pm UTC](https://devforum.zoom.us/t/flutter-zoom-video-sdk-error/100759/2 "2023-12-28T16:25:28Z")

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Hi @thinakaran.s ,

Did you add in a tpc value to your JWT generator payload, as mentioned [here](https://developers.zoom.us/docs/video-sdk/auth/#payload)?

Thanks,  
Rehema

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<div class="post-metadata">

**Author:** ![thinakaran.s](https://avatars.discourse-cdn.com/v4/letter/t/b5a626/32.png) [@thinakaran.s](https://devforum.zoom.us/u/thinakaran.s)\
**Post date:** [January 2, 2024, 10:05am UTC](https://devforum.zoom.us/t/flutter-zoom-video-sdk-error/100759/3 "2024-01-02T10:05:26Z")

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Hi, @rehema.zoom right now I am stuck below the error, would you please explain why I got this error? thanks in advance.

D/ZoomVideoSdkDebug(10733): onError, error: ZoomVideoSDKError\_JoinSession\_Token\_RoleType\_EmptyOrWrong

@kwaku.nyante