Error during Inference in Wild: yaml.constructor.ConstructorError: while constructing a Python instance

[ROODAY]

I followed the instructions for Inference in the wild but I ran into an issue on step 3. I run the following command in the root directory of the Detectron project:

python3 tools/infer_video.py \
--cfg configs/12_2017_baselines/e2e_keypoint_rcnn_R-101-FPN_s1x.yaml \
--output-dir ../video_output \
--image-ext mp4 \
--wts models/model_final.pkl \
../video_input

and I run into the following error:

Traceback (most recent call last):
  File "tools/infer_video.py", line 100, in <module>
    main(args)
  File "tools/infer_video.py", line 49, in main
    model = infer_engine.initialize_model_from_cfg(args.weights)
  File "/project/dnn-motion/kakashi/detectron/detectron/core/test_engine.py", line 329, in initialize_model_from_cfg
    model, weights_file, gpu_id=gpu_id,
  File "/project/dnn-motion/kakashi/detectron/detectron/utils/net.py", line 65, in initialize_gpu_from_weights_file
    saved_cfg = load_cfg(src_blobs['cfg'])
  File "/project/dnn-motion/kakashi/detectron/detectron/core/config.py", line 1145, in load_cfg
    return envu.yaml_load(cfg_to_load)
  File "/usr4/cs640/rooday/.local/lib/python3.7/site-packages/yaml/__init__.py", line 114, in load
    return loader.get_single_data()
  File "/usr4/cs640/rooday/.local/lib/python3.7/site-packages/yaml/constructor.py", line 43, in get_single_data
    return self.construct_document(node)
  File "/usr4/cs640/rooday/.local/lib/python3.7/site-packages/yaml/constructor.py", line 47, in construct_document
    data = self.construct_object(node)
  File "/usr4/cs640/rooday/.local/lib/python3.7/site-packages/yaml/constructor.py", line 94, in construct_object
    data = constructor(self, tag_suffix, node)
  File "/usr4/cs640/rooday/.local/lib/python3.7/site-packages/yaml/constructor.py", line 635, in construct_python_object_new
    return self.construct_python_object_apply(suffix, node, newobj=True)
  File "/usr4/cs640/rooday/.local/lib/python3.7/site-packages/yaml/constructor.py", line 618, in construct_python_object_apply
    value = self.construct_mapping(node, deep=True)
  File "/usr4/cs640/rooday/.local/lib/python3.7/site-packages/yaml/constructor.py", line 210, in construct_mapping
    return super().construct_mapping(node, deep=deep)
  File "/usr4/cs640/rooday/.local/lib/python3.7/site-packages/yaml/constructor.py", line 135, in construct_mapping
    value = self.construct_object(value_node, deep=deep)
  File "/usr4/cs640/rooday/.local/lib/python3.7/site-packages/yaml/constructor.py", line 99, in construct_object
    for dummy in generator:
  File "/usr4/cs640/rooday/.local/lib/python3.7/site-packages/yaml/constructor.py", line 404, in construct_yaml_map
    value = self.construct_mapping(node)
  File "/usr4/cs640/rooday/.local/lib/python3.7/site-packages/yaml/constructor.py", line 210, in construct_mapping
    return super().construct_mapping(node, deep=deep)
  File "/usr4/cs640/rooday/.local/lib/python3.7/site-packages/yaml/constructor.py", line 135, in construct_mapping
    value = self.construct_object(value_node, deep=deep)
  File "/usr4/cs640/rooday/.local/lib/python3.7/site-packages/yaml/constructor.py", line 94, in construct_object
    data = constructor(self, tag_suffix, node)
  File "/usr4/cs640/rooday/.local/lib/python3.7/site-packages/yaml/constructor.py", line 624, in construct_python_object_apply
    instance = self.make_python_instance(suffix, node, args, kwds, newobj)
  File "/usr4/cs640/rooday/.local/lib/python3.7/site-packages/yaml/constructor.py", line 570, in make_python_instance
    node.start_mark)
yaml.constructor.ConstructorError: while constructing a Python instance
expected a class, but found <class 'builtin_function_or_method'>
  in "<unicode string>", line 3, column 20:
      BBOX_XFORM_CLIP: !!python/object/apply:numpy.core ...

I'm not sure what this means/which file is causing an issue, could someone shed some light?

[ROODAY]

Solved using this solution.