Desktop-Streaming (Live Desktop & Audio Streaming to the browser with WebRTC) Ошибка

Я хотел загрузить драйвер xscreen. поэтому я открыл терминал и набрал следующие команды:

$uv4l --driver xscreen --auto-video_nr --display :0 --framerate 10 --server-option '--port=5678'

Это нормальный результат:

raspberrypi ~ $ uv4l --driver xscreen --auto-video_nr --display :0 --framerate 10 --server-option '--port=9000'

[core] Trying driver 'xscreen' from built-in drivers...
[core] Driver 'xscreen' not found
[core] Trying driver 'xscreen' from external plug-in's...
[driver] Opening display: :0
[driver] Display open, screen 0: 640x480, depth: 24, bpp: 32, big endian: false
[driver] Specified capturing rectangle: (xorigin 0, yorigin 0, width 640, height 480)
[core] Device detected!
[core] Trying to load the the Streaming Server plug-in...
[server] HTTP Streaming & WebRTC Signalling Server v1.1.18 built on Apr 22 2015
[core] Streaming Server loaded!
[core] Cannot create /dev/video0 because file already exists
[core] Registering device node /dev/video1
[server] Web Streaming Server listening on port 9000

Но я получил это сообщение:

 $ uv4l --driver xscreen --auto-video_nr --display :0 --framee 10 --server-option '--port=5678'

<notice> [core] Trying driver 'xscreen' from built-in drivers...
<warning> [core] Driver 'xscreen' not found
<notice> [core] Trying driver 'xscreen' from external plug-in's...
<warning> [core] /usr/lib/uv4l/libxscreen.so: undefined symbol: _ZN5boost11ththread5hiden9sleep_forERK8timespec
<alert> [core] No device detected

В чем моя проблема? Помоги мне, пожалуйста!