bodyposeNet FileNotFoundError: [Errno 2] No such file or directory: '/workspace/tlt_cv_samples/bpnet/data_pose_config/coco_spec.json'

ok, so you can modify your ~/.tlt_mounts.json.
Then everything should be ok.

After modifying, you can check
$ tlt bpnet run ls /workspace/tlt-experiments

According to your ~/.tlt_mounts.json file, there should be the files in bpnet folder.