Invalid value for "PDF_PATH": File "/work/host-input/paper.pdf" does not exist.

Docker build has succeeded.

Usage: rundetection.py [OPTIONS] OUTPUT_DIRECTORY PDF_PATH
Try "rundetection.py -h" for help.

Error: Invalid value for "PDF_PATH": File "/work/host-input/paper.pdf" does not exist.
Traceback (most recent call last):
File "manage.py", line 70, in
manage()
File "/media/amax/Masters/liupengxue/lpx/lib/python3.5/site-packages/click/core.py", line 722, in __call__
return self.main(*args, **kwargs)
File "/media/amax/Masters/liupengxue/lpx/lib/python3.5/site-packages/click/core.py", line 697, in main
rv = self.invoke(ctx)
File "/media/amax/Masters/liupengxue/lpx/lib/python3.5/site-packages/click/core.py", line 1066, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File "/media/amax/Masters/liupengxue/lpx/lib/python3.5/site-packages/click/core.py", line 895, in invoke
return ctx.invoke(self.callback, **ctx.params)
File "/media/amax/Masters/liupengxue/lpx/lib/python3.5/site-packages/click/core.py", line 535, in invoke
return callback(*args, **kwargs)
File "/media/amax/Masters/liupengxue/deepfigures/deepfigures-open-master/scripts/detectfigures.py", line 79, in detectfigures
raise_error=True)
File "/media/amax/Masters/liupengxue/deepfigures/deepfigures-open-master/scripts/__init__.py", line 54, in execute
cmd=command)
subprocess.CalledProcessError: Command 'docker run --rm --env-file deepfigures-local.env --volume /media/amax/Masters/liupengxue/deepfigures/deepfigures-open-master/results:/work/host-output/ --volume /media/amax/Masters/liupengxue/deepfigures/deepfigures-open-master:/work/host-input/ deepfigures-cpu:0.0.1 python3 /work/scripts/rundetection.py /work/host-output/ /work/host-input/paper.pdf' returned non-zero exit status 2