FFmpeg pipeline failed on 0.3-alpha about pipeline-server HOT 5 CLOSED

$ docker/build.sh --framework ffmpeg
$ docker/run.sh --framework ffmpeg --pipelines /path/to/Ad-Insertion-Sample/adinsertion/analytics/Xeon/ffmpeg/pipelines

$ samples/sample.py
Launching with options:
Namespace(destination='/tmp/results.txt', pipeline='object_detection', repeat=1, source='https://github.com/intel-iot-devkit/sample-videos/blob/master/bottle-detection.mp4?raw=true', verbose=True, version='1')
Starting Pipeline: http://localhost:8080/pipelines/object_detection/1
Pipeline Status:

{
    "avg_fps": 0,
    "elapsed_time": 0.0043637752532958984,
    "id": 1,
    "start_time": 1610067108.4090872,
    "state": "QUEUED"
}
Pipeline Status:

{
    "avg_fps": 0,
    "elapsed_time": 0.5147325992584229,
    "id": 1,
    "start_time": 1610067108.4090872,
    "state": "RUNNING"
}
Pipeline Status:

{
    "avg_fps": 0,
    "elapsed_time": 1.0265381336212158,
    "id": 1,
    "start_time": 1610067108.4090872,
    "state": "RUNNING"
}
Pipeline Status:

{
    "avg_fps": 0,
    "elapsed_time": 1.5306789875030518,
    "id": 1,
    "start_time": 1610067108.4090872,
    "state": "RUNNING"
}