Demo not working

[olin256]

I'm getting the following:

fluidsynth: error: Unknown integer parameter 'synth.sample-rate'
fluidsynth: error: Unknown integer parameter 'synth.sample-rate'
fluidsynth: error: Unknown integer parameter 'synth.sample-rate'
fluidsynth: error: Unknown integer parameter 'synth.sample-rate'
ffmpeg version 4.4.2-0ubuntu0.22.04.1 Copyright (c) 2000-2021 the FFmpeg developers
built with gcc 11 (Ubuntu 11.2.0-19ubuntu1)
configuration: --prefix=/usr --extra-version=0ubuntu0.22.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-pocketsphinx --enable-librsvg --enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
libavutil      56. 70.100 / 56. 70.100
libavcodec     58.134.100 / 58.134.100
libavformat    58. 76.100 / 58. 76.100
libavdevice    58. 13.100 / 58. 13.100
libavfilter     7.110.100 /  7.110.100
libswscale      5.  9.100 /  5.  9.100
libswresample   3.  9.100 /  3.  9.100
libpostproc    55.  9.100 / 55.  9.100
Guessed Channel Layout for Input Stream #0.0 : mono
Input #0, wav, from '/tmp/tmpj6_brldl/audio.wav':
Duration: 00:00:27.58, bitrate: 2822 kb/s
Stream #0:0: Audio: pcm_f64le ([3][0][0][0] / 0x0003), 44100 Hz, mono, dbl, 2822 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (pcm_f64le (native) -> mp3 (libmp3lame))
Press [q] to stop, [?] for help
Output #0, mp3, to '/tmp/audio.mp3':
Metadata:
TSSE            : Lavf58.76.100
Stream #0:0: Audio: mp3, 44100 Hz, mono, fltp
Metadata:
encoder         : Lavc58.134.100 libmp3lame
size=       0kB time=00:00:00.00 bitrate=N/A speed=   0x
size=     209kB time=00:00:26.67 bitrate=  64.2kbits/s speed=55.4x
video:0kB audio:209kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.106181%
Traceback (most recent call last):
File "/root/.pyenv/versions/3.7.16/lib/python3.7/site-packages/cog/server/worker.py", line 217, in _predict
result = predict(**payload)
File "predict.py", line 82, in predict
print(subprocess.check_output("ls /tmp").decode())
File "/root/.pyenv/versions/3.7.16/lib/python3.7/subprocess.py", line 411, in check_output
**kwargs).stdout
File "/root/.pyenv/versions/3.7.16/lib/python3.7/subprocess.py", line 488, in run
with Popen(*popenargs, **kwargs) as process:
File "/root/.pyenv/versions/3.7.16/lib/python3.7/subprocess.py", line 800, in __init__
restore_signals, start_new_session)
File "/root/.pyenv/versions/3.7.16/lib/python3.7/subprocess.py", line 1551, in _execute_child
raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: 'ls /tmp': 'ls /tmp'