# Video SDK Issue on web
**URL:** https://devforum.zoom.us/t/video-sdk-issue-on-web/90235
**Category:** Web
**Created:** [June 15, 2023, 12:07pm UTC](https://devforum.zoom.us/t/video-sdk-issue-on-web/90235 "2023-06-15T12:07:15Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@pooja.emedstore](https://devforum.zoom.us/u/pooja.emedstore)
#### Post date: [June 15, 2023, 12:07pm UTC](https://devforum.zoom.us/t/video-sdk-issue-on-web/90235/1 "2023-06-15T12:07:15Z")
We are facing an issue while using Video SDK on Web version 1.6.0.
If a participant is suddenly disconnected due to some issue & when returning to the session, the system does not update the camera image it got stuck.
---
### Author:  [@pooja.emedstore](https://devforum.zoom.us/u/pooja.emedstore)
#### Post date: [June 19, 2023, 7:11am UTC](https://devforum.zoom.us/t/video-sdk-issue-on-web/90235/2 "2023-06-19T07:11:46Z")
It is giving us below error in below handle.
{
“type”: “INVALID\_OPERATION”,
“reason”: “subscribe video counts greater than maximum size (1)”
}
It works if reloading the browser and join again. But If **participant** simply click browser back button and join session again it gives above error **to another user** in below event
const onPeerVideoStateChange = useCallback(async (payload: any) =\> {
console.log(“peer-video-state-change”, payload);
if (payload.action === “Start”) {
await mediaStream.current?.renderVideo(
elements.patientCanvas(),
payload.userId,
mainViewWidth,
mainViewHeight,
0,
0,
2
);
updateVideoState({ isPatientVideoOn: true });
} else if (payload.action === “Stop”) {
await stopPatientVideo();
}
}, );
---
### Author:  [@vic.yang](https://devforum.zoom.us/u/vic.yang)
#### Post date: [June 20, 2023, 2:07am UTC](https://devforum.zoom.us/t/video-sdk-issue-on-web/90235/3 "2023-06-20T02:07:03Z")
Hey @pooja.emedstore
Thanks for your feedback.
Have you enabled `SharedArrayBuffer` on your site?
> **[Zoom Developer Docs](https://developers.zoom.us/docs/video-sdk/web/gallery-view/#overview)**
>
> The Zoom Developer Platform is an open platform that allows third-party developers to build applications and integrations upon Zoom’s video-first unified communications platform.
If not, we cannot render more than 1 video on the same canvas, which means you need to assign a canvas for each video.
Thanks
Vic
---
### Author:  [@pooja.emedstore](https://devforum.zoom.us/u/pooja.emedstore)
#### Post date: [June 20, 2023, 6:10am UTC](https://devforum.zoom.us/t/video-sdk-issue-on-web/90235/4 "2023-06-20T06:10:25Z")
@vic.yang
Thank you for your response.
we are not trying to render more than one video on single canvas. Its just start & stop rendering for the same participant.
It is working absolutely fine when participant manually starts & stops the video mode but when he leaves the session and rejoins, then turn on video, that is where the other user gets the given error when rendering.
---
### Author:  [@vic.yang](https://devforum.zoom.us/u/vic.yang)
#### Post date: [June 20, 2023, 6:34am UTC](https://devforum.zoom.us/t/video-sdk-issue-on-web/90235/5 "2023-06-20T06:34:40Z")
Hey @pooja.emedstore
Each user who joins the session will be automatically assigned a `userId`, which is also applicable to the scenario of leaving and rejoining the session.
So a new canvas is required or if you need to reuse the same canvas, invoke the `stopRenderVideo` to clear the previous rendered before using `renderVideo` to render the new video.
Thanks
Vic
---
### Author:  [@pooja.emedstore](https://devforum.zoom.us/u/pooja.emedstore)
#### Post date: [June 20, 2023, 1:28pm UTC](https://devforum.zoom.us/t/video-sdk-issue-on-web/90235/6 "2023-06-20T13:28:45Z")
Hello @vic.yang
We are exactly doing the same thing but somehow its not working. Will try few other things & let you know if it works.
---
### Author:  [@system](https://devforum.zoom.us/u/system)
#### Post date: [July 20, 2023, 11:29pm UTC](https://devforum.zoom.us/t/video-sdk-issue-on-web/90235/7 "2023-07-20T23:29:44Z")
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