# Error "Start Video" for first participant **URL:** \ **Category:** Web\ **Created:** [November 2, 2020, 3:57pm UTC](https://devforum.zoom.us/t/error-start-video-for-first-participant/34917 "2020-11-02T15:57:46Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![jc5826](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/jc5826/32/18228_2.png) [@jc5826](https://devforum.zoom.us/u/jc5826)\ **Post date:** [November 2, 2020, 3:57pm UTC](https://devforum.zoom.us/t/error-start-video-for-first-participant/34917/1 "2020-11-02T15:57:46Z")
**Description** I’m getting an javascript error when clicking on the “Start Video” button and then the display goes all black. I believe it is only happening when you are the first participant in the meeting. I was able to reproduce using the sample-app. **Error** Cannot read property ‘width’ of undefined. **Which version?** Latest version from [https://github.com/zoom/sample-app-web.git](https://github.com/zoom/sample-app-web.git) and @zoomus/websdk 1.8.1 **To Reproduce(If applicable)** Steps to reproduce the behavior: 1. download and install sample-app-web 2. ‘npm run start’ from ‘Local’ sub-directory 3. Go to [http://localhost:9999](http://localhost:9999), enter meeting id (only change) and click “Join” 4. Click on “Start Video” button (make sure you are the only participant in meeting) **Screenshots** attached ![2020-11-02_10-34-52](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/c/6/c67daa4e17d5c0994b05151ecab284a0d1d5e017.png) **Device (please complete the following information):** - Device: Mac - OS: Catalina - Version: 10.15.7 - Browser:Chrome ---
**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\ **Post date:** [November 3, 2020, 10:14pm UTC](https://devforum.zoom.us/t/error-start-video-for-first-participant/34917/2 "2020-11-03T22:14:19Z")
Hey @jc5826, I was not able to reproduce this error. Can you share a video of it happening? Thanks, Tommy ---
**Author:** ![jc5826](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/jc5826/32/18228_2.png) [@jc5826](https://devforum.zoom.us/u/jc5826)\ **Post date:** [November 4, 2020, 2:10pm UTC](https://devforum.zoom.us/t/error-start-video-for-first-participant/34917/3 "2020-11-04T14:10:13Z")
Yes. here’s a video [https://www.screencast.com/t/eriwau3QBxfi](https://www.screencast.com/t/eriwau3QBxfi) Note. Not sure if my being on a Mac/Chrome makes a difference. A colleague using Windows/Chrome was not able to reproduce problem. ---
**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\ **Post date:** [November 6, 2020, 6:03pm UTC](https://devforum.zoom.us/t/error-start-video-for-first-participant/34917/4 "2020-11-06T18:03:36Z")
Thanks @jc5826, we will get to the bottom of this issue and share an update. 🙂 (CS-2495) -Tommy ---
**Author:** ![system](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/6/1/614bdd549b610bbaa46ff934617683a02bdaa03c.png) [@system](https://devforum.zoom.us/u/system)\ **Post date:** [December 7, 2020, 4:03am UTC](https://devforum.zoom.us/t/error-start-video-for-first-participant/34917/5 "2020-12-07T04:03:36Z")
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**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\ **Post date:** [January 6, 2021, 6:02pm UTC](https://devforum.zoom.us/t/error-start-video-for-first-participant/34917/6 "2021-01-06T18:02:24Z")
Hey @jc5826, I have confirmed with our team that we are fixing this in the next version, 1.8.6. We will post the release date here soon: > **[Web SDK - Upcoming Changes - Stay Up To Date - Documentation](https://marketplace.zoom.us/docs/guides/stay-up-to-date/upcoming-changes/web-sdk)** > > Updates coming soon > > //s3.amazonaws.com/user-content.stoplight.io/19807/1560896254031 -Tommy ---
**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\ **Post date:** [January 11, 2021, 6:55pm UTC](https://devforum.zoom.us/t/error-start-video-for-first-participant/34917/7 "2021-01-11T18:55:51Z")
Hey @jc5826 , This should now be fixed. Please upgrade to version 1.8.6: > [@Web SDK update version 1.8.6](https://devforum.zoom.us/t/web-sdk-update-version-1-8-6/40245): > > Hello Zoom Developers, here are the updates for the Web SDK version 1.8.6 release : Bug Fixes Fixed Attendee cannot join in to BreakOut Room when “Enable Waiting Room” is enabled. [Fixed Attendee Leaves meeting show 'trying to reconnect’.](https://devforum.zoom.us/t/sdk-1-8-5-zoom-component-try-to-reconnect-after-leaving-a-meeting-instead-of-closing/39062)[Fixed Joined audio user can’t show waiting room when be put on hold.](https://devforum.zoom.us/t/waiting-room-is-not-displayed-when-user-is-put-on-hold/31951)[Fixed Android Chrome Audio don’t work.](https://devforum.zoom.us/t/audio-not-working-in-mobile-1-8-5/39332) Fixed Audio stops working when High-Fidelity/Stereo Mode is Enabled. [Fixed Start Video Black Screen in Mac When Only One attendee.](https://devforum.zoom.us/t/error-start-video-for-first-participant/34917) Fixed “The host mute/… Thanks, Tommy