# Video sdk giving error in flutter when joining session

**URL:** <https://devforum.zoom.us/t/video-sdk-giving-error-in-flutter-when-joining-session/137619>\
**Category:** Video SDK\
**Created:** [September 24, 2025, 7:50am UTC](https://devforum.zoom.us/t/video-sdk-giving-error-in-flutter-when-joining-session/137619 "2025-09-24T07:50:52Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Manan1](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/manan1/32/71398_2.png) [@Manan1](https://devforum.zoom.us/u/Manan1)\
**Post date:** [September 24, 2025, 7:50am UTC](https://devforum.zoom.us/t/video-sdk-giving-error-in-flutter-when-joining-session/137619/1 "2025-09-24T07:50:52Z")

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Hey Team i am using zoom video sdk for our app integration i Have created app in zoom developer platform

This is app that i Have created : [App Marketplace](https://marketplace.zoom.us/develop/applications/GWt3NxYZQ8WR4fY3i_UDPA/information?mode=dev)

This kind of Token generation happened and this body we are passing for generation token: {“app\_key”:“QkHqN9j1SCeHTzn…..”,“role\_type”:1,“tpc”:“test”,“version”:1,“iat”:1758694965,“exp”:1758698565,“user\_identity”:“guest”,“geo\_regions”:“[zoom.us](http://zoom.us)”,“video\_webrtc\_mode”:1}

For example I am using your this examples : Github

Using this example to generate session and we are passing this token to zoom flutter sdk we are getting error like : ZoomVideoSDKError\_Invalid\_Parameter