# Can not start zoom in flutter

**URL:** <https://devforum.zoom.us/t/can-not-start-zoom-in-flutter/139283>\
**Category:** Flutter\
**Created:** [December 5, 2025, 12:10pm UTC](https://devforum.zoom.us/t/can-not-start-zoom-in-flutter/139283 "2025-12-05T12:10:14Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![rk\_infotech](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/rk_infotech/32/72664_2.png) [@rk\_infotech](https://devforum.zoom.us/u/rk_infotech)\
**Post date:** [December 5, 2025, 12:10pm UTC](https://devforum.zoom.us/t/can-not-start-zoom-in-flutter/139283/1 "2025-12-05T12:10:14Z")

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onError, error: ZoomVideoSDKError\_Session\_Invalid\_Param

onSessionLeave, reason: ZoomVideoSDKSessionLeaveReason\_BySelf

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**Author:** ![ekaansh.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/ekaansh.zoom/32/55004_2.png) [@ekaansh.zoom](https://devforum.zoom.us/u/ekaansh.zoom)\
**Post date:** [December 10, 2025, 9:57am UTC](https://devforum.zoom.us/t/can-not-start-zoom-in-flutter/139283/2 "2025-12-10T09:57:18Z")

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Hi @rk_infotech, the error indicates that you have incorrect parameters in the session join call. I’d suggest reading through the [auth docs](https://developers.zoom.us/docs/video-sdk/auth/) and make sure you’re entering the correct details. Please double check your JWT.