# Zoom jwt app calling issue **URL:** \ **Category:** Web\ **Created:** [November 25, 2019, 11:42am UTC](https://devforum.zoom.us/t/zoom-jwt-app-calling-issue/6804 "2019-11-25T11:42:15Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![kshitij.s](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/kshitij.s/32/2042_2.png) [@kshitij.s](https://devforum.zoom.us/u/kshitij.s)\ **Post date:** [November 25, 2019, 11:42am UTC](https://devforum.zoom.us/t/zoom-jwt-app-calling-issue/6804/1 "2019-11-25T11:42:15Z")
Hello Team, We have setup the zoom JWT sample app at our server. When two user join same meeting and join audio+allow the video camera, then they can only see their own video screen, screen of other user is not getting display to each end and only black screen display with the name of next user. In few minutes meeting get disconnect automatically and throw this error : Uncaught TypeError: Cannot read property ‘iceConnectionState’ of null at RTCPeerConnection. We are using the 1.6.1 CDN version. We are getting this issue continuously, Please help us if we are missing anything. Thanks ---
**Author:** ![kshitij.s](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/kshitij.s/32/2042_2.png) [@kshitij.s](https://devforum.zoom.us/u/kshitij.s)\ **Post date:** [November 25, 2019, 3:24pm UTC](https://devforum.zoom.us/t/zoom-jwt-app-calling-issue/6804/2 "2019-11-25T15:24:02Z")
Check this : [https://support.zoom.us/hc/en-us/requests/1905103](https://support.zoom.us/hc/en-us/requests/1905103) For more info ---
**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 25, 2019, 9:01pm UTC](https://devforum.zoom.us/t/zoom-jwt-app-calling-issue/6804/3 "2019-11-25T21:01:05Z")
Hey @kshitij.s, Can you show a screenshot of the error? Also is your server secured via `https`? Also what browser are you using? Here is the video support across browsers: > **[Zoom Web Client](https://support.zoom.us/hc/en-us/articles/214629443-Zoom-Web-Client#h_2da60ac7-455e-466f-85d1-974aa68f0703)** > > Overview > The Zoom web client allows joining a Zoom meeting or webinar without downloading any plugins or software. However, the web client has limited features and functions best on Google Chrome. ... Thanks, Tommy ---
**Author:** ![kshitij.s](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/kshitij.s/32/2042_2.png) [@kshitij.s](https://devforum.zoom.us/u/kshitij.s)\ **Post date:** [November 26, 2019, 6:50am UTC](https://devforum.zoom.us/t/zoom-jwt-app-calling-issue/6804/4 "2019-11-26T06:50:39Z")
Hello @Tommy Yes our server are secured with https. We are using latest browsers firefox and chrome on window and ubuntu operating system. Thanks ---
**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 26, 2019, 5:18pm UTC](https://devforum.zoom.us/t/zoom-jwt-app-calling-issue/6804/5 "2019-11-26T17:18:39Z")
Hey @kshitij.s, Can you send me a github link of your code so I can reproduce the issue on my end and debug? Feel free to private message me. Thanks, Tommy ---
**Author:** ![kshitij.s](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/kshitij.s/32/2042_2.png) [@kshitij.s](https://devforum.zoom.us/u/kshitij.s)\ **Post date:** [November 27, 2019, 7:44am UTC](https://devforum.zoom.us/t/zoom-jwt-app-calling-issue/6804/6 "2019-11-27T07:44:10Z")
Hello @tommy I have sent an private message with code link. Please check, Thanks ---
**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 27, 2019, 5:14pm UTC](https://devforum.zoom.us/t/zoom-jwt-app-calling-issue/6804/7 "2019-11-27T17:14:02Z")
Thanks @kshitij.s, I will take a look. -Tommy ---
**Author:** ![kshitij.s](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/kshitij.s/32/2042_2.png) [@kshitij.s](https://devforum.zoom.us/u/kshitij.s)\ **Post date:** [November 28, 2019, 7:00am UTC](https://devforum.zoom.us/t/zoom-jwt-app-calling-issue/6804/8 "2019-11-28T07:00:52Z")
Thank you so much @tommy ---
**Author:** ![kshitij.s](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/kshitij.s/32/2042_2.png) [@kshitij.s](https://devforum.zoom.us/u/kshitij.s)\ **Post date:** [November 29, 2019, 6:53am UTC](https://devforum.zoom.us/t/zoom-jwt-app-calling-issue/6804/9 "2019-11-29T06:53:52Z")
Hello @tommy Any updated, did you checked the code I have given. Thanks ---
**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:** [December 2, 2019, 9:25pm UTC](https://devforum.zoom.us/t/zoom-jwt-app-calling-issue/6804/10 "2019-12-02T21:25:38Z")
Hey @kshitij.s, The link you sent me is inaccessible. Please try sending me your code via Github or a link I can access. Thanks, Tommy ---
**Author:** ![kshitij.s](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/kshitij.s/32/2042_2.png) [@kshitij.s](https://devforum.zoom.us/u/kshitij.s)\ **Post date:** [December 3, 2019, 4:04pm UTC](https://devforum.zoom.us/t/zoom-jwt-app-calling-issue/6804/11 "2019-12-03T16:04:44Z")
Hello @tommy I have updated my code to latest 1.7 CDN version. Some issues are fixed on it, but the above mentioned call drop still exist there. Can you please create a zoom meeting with me tomorrow 9:30 am Central Time (CT), Please share meeting link here when you done with meeting creation, so I will be available at the time. On meeting we can discuss the issues in more brief. I can also share the “Project code link” while meeting so you can check the code and issue that time. For now you can check the below issue which is still exist after latest update also * * * Today call drop at 08:00 PM IST for user “Richard” & “aroptr” on meeting ID : 508232972 * * * Please check if you can debug the issue based on above details. Also please create a meeting for tomorrow so we can check on that. Thanks ---
**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:** [December 3, 2019, 10:57pm UTC](https://devforum.zoom.us/t/zoom-jwt-app-calling-issue/6804/12 "2019-12-03T22:57:26Z")
Hey @kshitij.s, Unfortunately I am unavailable at that time. You can schedule time with me using the following link: Thanks, Tommy ---
**Author:** ![kshitij.s](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/kshitij.s/32/2042_2.png) [@kshitij.s](https://devforum.zoom.us/u/kshitij.s)\ **Post date:** [December 4, 2019, 7:21am UTC](https://devforum.zoom.us/t/zoom-jwt-app-calling-issue/6804/13 "2019-12-04T07:21:03Z")
![Screenshot from 2019-12-04 12-49-36](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/2X/9/900641afd0a38a90bd323eb0f55a680e27baa071.png) Please check this console log. It happens when the meeting get disconnect automatically. ---
**Author:** ![kshitij.s](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/kshitij.s/32/2042_2.png) [@kshitij.s](https://devforum.zoom.us/u/kshitij.s)\ **Post date:** [December 4, 2019, 10:39am UTC](https://devforum.zoom.us/t/zoom-jwt-app-calling-issue/6804/14 "2019-12-04T10:39:14Z")
Hello @Tommy I have scheduled time with you , with the link you have given above. Please join meeting here : redacted Thanks ---
**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:** [December 4, 2019, 4:32pm UTC](https://devforum.zoom.us/t/zoom-jwt-app-calling-issue/6804/15 "2019-12-04T16:32:33Z")
Hey @kshitij.s, Apologies, my timezone settings on my calendly were incorrect since I am traveling. In the meantime I will investigate the error you shared in the console. Can you please reschedule for tomorrow? Thanks, Tommy ---
**Author:** ![kshitij.s](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/kshitij.s/32/2042_2.png) [@kshitij.s](https://devforum.zoom.us/u/kshitij.s)\ **Post date:** [December 5, 2019, 7:56am UTC](https://devforum.zoom.us/t/zoom-jwt-app-calling-issue/6804/16 "2019-12-05T07:56:16Z")
Hello @tommy Did you get time to check the above screenshot I uploaded related to issue. Please check Thanks ---
**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:** [December 6, 2019, 12:49am UTC](https://devforum.zoom.us/t/zoom-jwt-app-calling-issue/6804/17 "2019-12-06T00:49:02Z")
Hey @kshitij.s, Please only post on this thread for the issue moving forward: > [@New zoom sdk 1.7.0 issue, call drop](https://devforum.zoom.us/t/new-zoom-sdk-1-7-0-issue-call-drop/6925): > > Hello Team, We have integrated the new zoom web SDK to use zoom meeting feature on our website. After joining the meeting after few minutes we got an error "TypeError: u is null’ and meeting get disconnected. I am sharing a screenshot of web console. Please check that also. Please check, Thanks Thanks, Tommy ---
**Author:** ![kshitij.s](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/kshitij.s/32/2042_2.png) [@kshitij.s](https://devforum.zoom.us/u/kshitij.s)\ **Post date:** [December 7, 2019, 7:05am UTC](https://devforum.zoom.us/t/zoom-jwt-app-calling-issue/6804/18 "2019-12-07T07:05:08Z")
Hello @tommy Yes this is related to this thread, call drop was in initial request of this thread. Please check. ---
**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:** [December 9, 2019, 5:03pm UTC](https://devforum.zoom.us/t/zoom-jwt-app-calling-issue/6804/19 "2019-12-09T17:03:43Z")
Hey @kshitij.s, We will respond to you on the other thread. Triple posting the same issue makes it hard for us to track. Thanks, Tommy ---
**Author:** ![DeveloperBot](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/developerbot/32/12632_2.png) [@DeveloperBot](https://devforum.zoom.us/u/DeveloperBot)\ **Post date:** [August 21, 2020, 7:05pm UTC](https://devforum.zoom.us/t/zoom-jwt-app-calling-issue/6804/20 "2020-08-21T19:05:24Z")
Closed on August 21, 2020, 7:05pm UTC