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# helpdesk

steep-balloon-41261

10/02/2023, 5:22 AM

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boundless-energy-78552

10/02/2023, 5:23 AM

Hi, is it possible that you reproduce the issue with the env var

Copy code

RUST_BACKTRACE=full

boundless-energy-78552

10/02/2023, 5:24 AM

The panic doesn’t show enough error to be useful 🙂

brave-fish-10518

10/02/2023, 5:24 AM

Yes, I will post an updated message soon. Thanks!

brave-fish-10518

10/02/2023, 5:29 AM

Copy code

[2023-10-02T05:25:54Z WARN  libwebrtc] (<http://sctp_data_channel.cc:369|sctp_data_channel.cc:369>): DataChannelObserver - adapter needed
[2023-10-02T05:25:54Z WARN  libwebrtc] (<http://sctp_data_channel.cc:369|sctp_data_channel.cc:369>): DataChannelObserver - adapter needed
[2023-10-02T05:25:54Z WARN  libwebrtc] (<http://basic_port_allocator.cc:1024|basic_port_allocator.cc:1024>): Discarding candidate because port is already done gathering.
[2023-10-02T05:25:54Z WARN  libwebrtc] (<http://sctp_data_channel.cc:369|sctp_data_channel.cc:369>): DataChannelObserver - adapter needed
[2023-10-02T05:25:54Z WARN  libwebrtc] (<http://sctp_data_channel.cc:369|sctp_data_channel.cc:369>): DataChannelObserver - adapter needed
INFO:root:connected to room test
INFO:root:participants: {}
INFO:root:connection state changed: 1
INFO:root:connection quality changed for test
thread 'tokio-runtime-worker' panicked at 'called `Result::unwrap()` on an `Err` value: ""', livekit/src/rtc_engine/rtc_session.rs:550:86
stack backtrace:
   0:     0xffff8b0a11ec - <unknown>
   1:     0xffff8aeeb060 - <unknown>
   2:     0xffff8b080b9c - <unknown>
   3:     0xffff8b0a6878 - <unknown>
   4:     0xffff8b0a64ac - <unknown>
   5:     0xffff8b0a73d4 - <unknown>
   6:     0xffff8b0a6ed8 - <unknown>
   7:     0xffff8b0a6e4c - <unknown>
   8:     0xffff8b0a6e40 - <unknown>
   9:     0xffff8ae8dc24 - <unknown>
  10:     0xffff8ae8df20 - <unknown>
  11:     0xffff8af46158 - <unknown>
  12:     0xffff8af65074 - <unknown>
  13:     0xffff8b0a97a8 - <unknown>
  14:     0xffff8b0b4308 - <unknown>
  15:     0xffff8b0afc40 - <unknown>
  16:     0xffff8b0b76cc - <unknown>
  17:     0xffff8b0a8804 - <unknown>
  18:     0xffff8b0a7f14 - <unknown>
  19:     0xffff8d763624 - start_thread
                               at /build/glibc-RIFKjK/glibc-2.31/nptl/pthread_create.c:477:8
  20:     0xffff8d85e49c - thread_start
                               at /build/glibc-RIFKjK/glibc-2.31/misc/../sysdeps/unix/sysv/linux/aarch64/clone.S:78
  21:                0x0 - <unknown>
thread 'tokio-runtime-worker' panicked at 'called `Result::unwrap()` on an `Err` value: JoinError::Panic(Id(51), ...)', livekit/src/rtc_engine/rtc_session.rs:328:32
stack backtrace:
   0:     0xffff8b0a11ec - <unknown>
   1:     0xffff8aeeb060 - <unknown>
   2:     0xffff8b080b9c - <unknown>
   3:     0xffff8b0a6878 - <unknown>
   4:     0xffff8b0a64ac - <unknown>
   5:     0xffff8b0a73d4 - <unknown>
   6:     0xffff8b0a6ed8 - <unknown>
   7:     0xffff8b0a6e4c - <unknown>
   8:     0xffff8b0a6e40 - <unknown>
   9:     0xffff8ae8dc24 - <unknown>
  10:     0xffff8ae8df20 - <unknown>
  11:     0xffff8af3917c - <unknown>
  12:     0xffff8af4dac4 - <unknown>
  13:     0xffff8af65b50 - <unknown>
  14:     0xffff8b0a97a8 - <unknown>
  15:     0xffff8b0b4308 - <unknown>
  16:     0xffff8b0afc40 - <unknown>
  17:     0xffff8b0b76cc - <unknown>
  18:     0xffff8b0a8804 - <unknown>
  19:     0xffff8b0a7f14 - <unknown>
  20:     0xffff8d763624 - start_thread
                               at /build/glibc-RIFKjK/glibc-2.31/nptl/pthread_create.c:477:8
  21:     0xffff8d85e49c - thread_start
                               at /build/glibc-RIFKjK/glibc-2.31/misc/../sysdeps/unix/sysv/linux/aarch64/clone.S:78
  22:                0x0 - <unknown>

boundless-energy-78552

10/02/2023, 5:43 AM

Which

OS & Arch

are you using?

boundless-energy-78552

10/02/2023, 5:45 AM

Also which server version are you using?

brave-fish-10518

10/02/2023, 5:45 AM

I’m running on Linux it is a Jetson device with ubuntu 20.04 aarch64.

boundless-energy-78552

10/02/2023, 5:46 AM

And you’re using ffi v0.3.6 right?

brave-fish-10518

10/02/2023, 5:46 AM

The server version is

livekit-server version 1.4.5

brave-fish-10518

10/02/2023, 5:48 AM

I’m not really sure how to tell but the first line of output says initializing ffi server v0.3.6

👌 1

➕ 1

boundless-energy-78552

10/02/2023, 5:50 AM

how are you sending the data?

boundless-energy-78552

10/02/2023, 5:50 AM

are you using the RoomService API?

brave-fish-10518

10/02/2023, 5:52 AM

I’m using the livekit python server sdk and using the RoomServiceClient and the send_data function.

boundless-energy-78552

10/02/2023, 5:53 AM

Ok, understood, so I found the issue, I’ll release a fix tomorrow 🙂 (PDT timezone)

brave-fish-10518

10/02/2023, 5:54 AM

Thanks so much!

boundless-energy-78552

10/02/2023, 7:21 PM

Hey, this should be fixed on v0.4.5

brave-fish-10518

10/03/2023, 12:56 AM

Thank you again. I tested the new version but I think I found another bug. In the livekit/room.py the variable rparticipant may not have been init before sending to the emit event causing an error.

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UnboundLocalError: local variable `rparticipant` referenced before assignment

https://github.com/livekit/client-sdk-python/blob/f7adeb66dc3ef035468480a99037e70a06c7b43e/livekit/room.py#L308-L320 I was able to create a workaround by setting rparticipant = None before the

if

statement. I can make a PR for you but I’m not sure if this is how you really want to handle this. Let me know.

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elif which == 'data_received':
            ...

            rparticipant = None
            if event.data_received.participant_sid:
                rparticipant = self.participants[event.data_received.participant_sid]
            self.emit('data_received', data,
                      event.data_received.kind, rparticipant)

boundless-energy-78552

10/03/2023, 12:57 AM

Oh interesting, can you make a PR ?

brave-fish-10518

10/03/2023, 1:30 AM

Here you go. Not much of a change. https://github.com/livekit/client-sdk-python/pull/74

🙏 1

boundless-energy-78552

10/03/2023, 4:55 AM

Thanks, I just merged it and released v0.4.6

🙌 1

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