Error running flask-api: RuntimeError: [enforce fail at inline_container.cc:208] . file not found: /version

[nitinsurya]

Downloaded model_final_trimmed.pth file from dropbox link in the repo, placed it in the backend/ folder.

When running docker-compose up --build following error pops up and the flask_api fails to load.

Loaded config: DLA_mask_rcnn_R_101_FPN_3x.yaml
Loaded model: model_final_trimmed.pth
Traceback (most recent call last):
  File "/app/bin/flask", line 8, in <module>
    sys.exit(main())
  File "/app/lib/python3.8/site-packages/flask/cli.py", line 967, in main
    cli.main(args=sys.argv[1:], prog_name="python -m flask" if as_module else None)
  File "/app/lib/python3.8/site-packages/flask/cli.py", line 586, in main
    return super(FlaskGroup, self).main(*args, **kwargs)
  File "/app/lib/python3.8/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/app/lib/python3.8/site-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/app/lib/python3.8/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/app/lib/python3.8/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/app/lib/python3.8/site-packages/click/decorators.py", line 73, in new_func
    return ctx.invoke(f, obj, *args, **kwargs)
  File "/app/lib/python3.8/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/app/lib/python3.8/site-packages/flask/cli.py", line 848, in run_command
    app = DispatchingApp(info.load_app, use_eager_loading=eager_loading)
  File "/app/lib/python3.8/site-packages/flask/cli.py", line 305, in __init__
    self._load_unlocked()
  File "/app/lib/python3.8/site-packages/flask/cli.py", line 330, in _load_unlocked
    self._app = rv = self.loader()
  File "/app/lib/python3.8/site-packages/flask/cli.py", line 388, in load_app
    app = locate_app(self, import_name, name)
  File "/app/lib/python3.8/site-packages/flask/cli.py", line 240, in locate_app
    __import__(module_name)
  File "/app/dla.py", line 3, in <module>
    app = create_app()
  File "/app/project/__init__.py", line 16, in create_app
    from project.api.dla_api import dla_blueprint
  File "/app/project/api/dla_api.py", line 5, in <module>
    from project.predictor import make_predictions
  File "/app/project/predictor.py", line 95, in <module>
    predictor = prepare_predictor()
  File "/app/project/predictor.py", line 38, in prepare_predictor
    predictor = VisualizationDemo(cfg)
  File "/app/project/d2predictor.py", line 36, in __init__
    self.predictor = DefaultPredictor(cfg)
  File "/app/lib/python3.8/site-packages/detectron2/engine/defaults.py", line 187, in __init__
    checkpointer.load(cfg.MODEL.WEIGHTS)
  File "/app/lib/python3.8/site-packages/fvcore/common/checkpoint.py", line 120, in load
    checkpoint = self._load_file(path)
  File "/app/lib/python3.8/site-packages/detectron2/checkpoint/detection_checkpoint.py", line 42, in _load_file
    loaded = super()._load_file(filename)  # load native pth checkpoint
  File "/app/lib/python3.8/site-packages/fvcore/common/checkpoint.py", line 216, in _load_file
    return torch.load(f, map_location=torch.device("cpu"))
  File "/app/lib/python3.8/site-packages/torch/serialization.py", line 586, in load
    with _open_zipfile_reader(f) as opened_zipfile:
  File "/app/lib/python3.8/site-packages/torch/serialization.py", line 246, in __init__
    super(_open_zipfile_reader, self).__init__(torch._C.PyTorchFileReader(name_or_buffer))
RuntimeError: [enforce fail at inline_container.cc:208] . file not found: /version

How can this be resolved?

[hpanwar08]

How did you download the model?

[nitinsurya]

Did wget from the repo's dropbox url, unzipped the file and used the unzipped model.

Oddly, model dowloaded from https:/hpanwar08/detectron2's dropbox link for MaskRCNN seems to work fine.

[hpanwar08]

Try this if it helps hpanwar08/detectron2#22

[nitinsurya]

Yup, looks like that solves the problem. Closing the ticket.