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# helpdesks
steep-balloon-41261
09/28/2023, 9:14 AMThis message was deleted.
k
kind-zoo-19226
09/28/2023, 9:17 AMIf i change the particiapnt permission using the server SDK I get 500 error and this message:
Copy code
{
"code": "internal",
"msg": "operation cannot be completed"
}e
eager-zoo-16408
09/28/2023, 1:23 PMHey @kind-zoo-19226, can you provide more context. What SDK are you using? Can you share some code of how you call the endpoint? Do you use LiveKit Cloud or host it yourself?
k
kind-zoo-19226
09/28/2023, 1:26 PM@eager-zoo-16408 It turned out to be an issue with calling the server API with multiple requests
I was calling
UpdateParticipantMutePublishedTrackkind-zoo-19226
09/28/2023, 1:27 PMI was calling it without
awaite
eager-zoo-16408
09/28/2023, 1:28 PMOK, glad you figured that out! :)
k
kind-zoo-19226
09/28/2023, 1:28 PMI faced a lot of issues with the server of these kinds, I think the server should be able to queue the requests if it can't handle them all at a time instead of just failing them
kind-zoo-19226
09/28/2023, 1:29 PMSo that it doesn't depend on the client making sure not to send multiple requests
e
eager-zoo-16408
09/28/2023, 1:31 PMI agree, and if this is the case, we need to investigate. Can you provide us with a minimally reproducible example?
k
kind-zoo-19226
09/28/2023, 1:32 PMWell I have reported a similar issue before
here https://github.com/livekit/server-sdk-js/issues/79
and here https://github.com/livekit/livekit/issues/2079
That has a reproducible example
e
eager-zoo-16408
09/28/2023, 1:48 PMThanks for the context. dz is definitely more experienced in this area, I’m not sure I can provide any more guidance than he did.