# Periodically error: CupertinoStreamer: Stream not found. What's happened?

**URL:** <https://community.wowza.com/t/periodically-error-cupertinostreamer-stream-not-found-whats-happened/96000>\
**Category:** Wowza Streaming Engine\
**Tags:** server-administration\
**Created:** [March 25, 2023, 10:12am UTC](https://community.wowza.com/t/periodically-error-cupertinostreamer-stream-not-found-whats-happened/96000 "2023-03-25T10:12:22Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![d398ac7fcdd6da5e9d41](https://avatars.discourse-cdn.com/v4/letter/d/e19b73/32.png) [@d398ac7fcdd6da5e9d41](https://community.wowza.com/u/d398ac7fcdd6da5e9d41)\
**Post date:** [March 25, 2023, 10:12am UTC](https://community.wowza.com/t/periodically-error-cupertinostreamer-stream-not-found-whats-happened/96000/1 "2023-03-25T10:12:22Z")

</div>

Hello! Periodically (1 time in 2-3 days) I get an error: HTTPStreamerAdapterCupertinoStreamer.onPlaylist: Stream not found (in WowzaEngine log).

```auto
2023-03-25
08:43:24
comment
server
HTTPStreamerAdapterCupertinoStreamer.onPlaylist: Stream not found [stream_name/live/default.m3u8]: live
x-duration:4.908

```

We are use vMix with Wowza. Without Transcoder.  
After a WowzaEngine reboot everything is fine. Unfortunately, the logs does not contain more detailed information than this is caused.  
In vMix I see just this error message:

```auto
FFMPEG1.Exited
Streaming
[rtmps @ 056afe80] Cannot open connection tls://example.com:1935
rtmps://stream: **** @example.com:1935/stream_name/live: Unknown error

    Last message repeated 1 times
[dshow @ 020c7aa0] real-time buffer [vMix Video YV12] [video input] too full or near too full (85% of size: 128000000 [rtbufsize parameter])! frame dropped!
    Last message repeated 1 times
[dshow @ 020c7aa0] real-time buffer [vMix Video YV12] [video input] too full or near too full (87% of size: 128000000 [rtbufsize parameter])! frame dropped!
    Last message repeated 1 times
[dshow @ 020c7aa0] real-time buffer [vMix Video YV12] [video input] too full or near too full (89% of size: 128000000 [rtbufsize parameter])! frame dropped!
    Last message repeated 1 times
[dshow @ 020c7aa0] real-time buffer [vMix Video YV12] [video input] too full or near too full (92% of size: 128000000 [rtbufsize parameter])! frame dropped!
    Last message repeated 10 times
[dshow @ 020c7aa0] real-time buffer [vMix Video YV12] [video input] too full or near too full (94% of size: 128000000 [rtbufsize parameter])! frame dropped!
    Last message repeated 1 times
[dshow @ 020c7aa0] real-time buffer [vMix Video YV12] [video input] too full or near too full (97% of size: 128000000 [rtbufsize parameter])! frame dropped!
    Last message repeated 4 times
[dshow @ 020c7aa0] real-time buffer [vMix Video YV12] [video input] too full or near too full (99% of size: 128000000 [rtbufsize parameter])! frame dropped!
    Last message repeated 1 times
[dshow @ 020c7aa0] real-time buffer [vMix Video YV12] [video input] too full or near too full (102% of size: 128000000 [rtbufsize parameter])! frame dropped!
    Last message repeated 75 times
[rtmps @ 056afe80] Cannot open connection tls://example.com:1935
rtmps://stream:wb4i6t729nBv5iP74A3j@example.com:1935/stream_name/live: Unknown error
[dshow @ 020c7aa0] real-time buffer [vMix Video YV12] [video input] too full or near too full (102% of size: 128000000 [rtbufsize parameter])! frame dropped!

```

I really hope for your help.

---

<div class="post-metadata">

**Author:** ![Jason\_Tuchler](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/jason_tuchler/32/462_2.png) [@Jason\_Tuchler](https://community.wowza.com/u/Jason_Tuchler)\
**Post date:** [March 27, 2023, 11:26pm UTC](https://community.wowza.com/t/periodically-error-cupertinostreamer-stream-not-found-whats-happened/96000/2 "2023-03-27T23:26:17Z")

</div>

@d398ac7fcdd6da5e9d41

It would be best to open a support ticket to have one of our Support Engineers review this HLS issue:

> **[Open a Support Ticket](https://www.wowza.com/support/open-ticket)**
>
> Open a Wowza suppor ticket so our technical support engineers worldwide can help you succeed with your Wowza software and services.

They will need full vMix logs, stream name effected, and the below Wowza Streaming Engine directories for review:  
[install-dir]/conf  
[install-dir]/logs