Web SDK users cannot chat with firefox v88.0.1 (64-Bit) with http

I have implemented a web sdk app.
When I join a meeting with firefox and try to chat, I could write a message, but the message is not sent.
This error only happens only in my local dev environment where only http is used.

The following JS error is displayed:
Uncaught TypeError: i is undefined

Which Web Client SDK version?
@zoomus/websdk”: “^1.9.5”,

To Reproduce(If applicable)
Steps to reproduce the behavior:

  1. Join a meeting with the webclient sdk
  2. Click on chat
  3. type in a chat message
  4. Press enter
  5. See error


Device (please complete the following information):

  • Device: PC
  • OS: Windows 10
  • Browser: Firefox
  • Browser Version: 88.0.1 (64-Bit)

Hey @mariopulker,

Thank you for reaching out to the Zoom Developer Forum. I just have a couple of questions to get started:

  1. Did you see this issue with 1.9.1?
  2. Does this happen when using the Sample Web App?

Further, this issue only happens when using HTTP instead of HTTPS, correct? If so, that seems to be expected as our Web SDK requires an SSL certificate to work as expected.


Hi Max.
Thank you for your answer.
I did not investigate further in that issue, because it is only happening when using http. With https it is working.
So you can close this ticket.

Thank you!


Great, I’m glad you got it working. Thanks for keeping us in the loop!