Error running `opensfm create_rig`

I have 4 cameras in a rig with camera names Left-left, Left-right, Right-left, and Right-right. The image files are named Left-left-001.png ... The camera: field exif_overrides.json is set correctly to each corresponding camera name. Normal reconstruction without considering rig runs correctly.

However, when I run opensfm create_rig data camera '{"RIG_CAMERA_ID1": "Left-left", "RIG_CAMERA_ID2": "Left-right", "RIG_CAMERA_ID3": "Right-left", "RIG_CAMERA_ID4": "Right-right"}', it shows the following info and error:

2023-08-11 10:47:24,678 INFO: Found 4 shots for instance -79.png using pattern matching.
2023-08-11 10:47:24,678 INFO: Found 4 shots for instance -33.png using pattern matching.
2023-08-11 10:47:24,678 INFO: Found 4 shots for instance -228.png using pattern matching.
2023-08-11 10:47:24,678 INFO: Found 4 shots for instance -58.png using pattern matching.
2023-08-11 10:47:24,678 INFO: Found 4 shots for instance -204.png using pattern matching.
2023-08-11 10:47:24,678 INFO: Found 4 shots for instance -96.png using pattern matching.
2023-08-11 10:47:24,678 INFO: Found 0 single shots using pattern matching.
2023-08-11 10:47:25,390 INFO: Found 2 connected components
2023-08-11 10:47:25,394 INFO: Best component has 247 instances
Traceback (most recent call last):
  File "/home/meson/Applications/src/OpenSfM/bin/opensfm_main.py", line 25, in <module>
    commands.command_runner(
  File "/home/meson/Applications/src/OpenSfM/opensfm/commands/command_runner.py", line 38, in command_runner
    command.run(data, args)
  File "/home/meson/Applications/src/OpenSfM/opensfm/commands/command.py", line 13, in run
    self.run_impl(data, args)
  File "/home/meson/Applications/src/OpenSfM/opensfm/commands/create_rig.py", line 15, in run_impl
    create_rig.run_dataset(dataset, args.method, json.loads(args.definition), True)
  File "/home/meson/Applications/src/OpenSfM/opensfm/actions/create_rig.py", line 26, in run_dataset
    rig.create_rigs_with_pattern(data, definition)
  File "/home/meson/Applications/src/OpenSfM/opensfm/rig.py", line 317, in create_rigs_with_pattern
    for subset_data, instances in propose_subset_dataset_from_instances(
  File "/home/meson/Applications/src/OpenSfM/opensfm/rig.py", line 205, in propose_subset_dataset_from_instances
    yield data.subset(name, subset_images), total_instances
  File "/home/meson/Applications/src/OpenSfM/opensfm/dataset.py", line 655, in subset
    subset_dataset = DataSet(subset_dataset_path, self.io_handler)
  File "/home/meson/Applications/src/OpenSfM/opensfm/dataset.py", line 52, in __init__
    self.load_image_list()
  File "/home/meson/Applications/src/OpenSfM/opensfm/dataset.py", line 82, in load_image_list
    raise IOError("No Images found in {}".format(image_list_path))
OSError: No Images found in data/rig_calibration/images

I could copy all images to data/rig_calibration/images first, make rig.py not to delete them then run again. But then it appears to be reconstructing all the images rather than a select subset of them.

And in the end, it fails.

2023-08-11 11:27:38,394 INFO: Some images can not be added
2023-08-11 11:27:38,394 INFO: -------------------------------------------------------
2023-08-11 11:27:38,396 INFO: Shots and/or GCPs are well-conditioned. Using naive 3D-3D alignment.
2023-08-11 11:27:38,801 INFO: Ran GLOBAL bundle in 0.36 secs.with 20/3791/14875 (3.92) shots/points/proj. (avg. length)
2023-08-11 11:27:38,802 DEBUG: Ceres Solver Report: Iterations: 6, Initial cost: 6.977387e+02, Final cost: 6.945257e+02, Termination: CONVERGENCE
2023-08-11 11:27:38,839 INFO: Removed outliers: 0
2023-08-11 11:27:38,885 INFO: Reconstruction 0: 28 images, 11431 points
2023-08-11 11:27:38,885 INFO: Reconstruction 1: 20 images, 3791 points
2023-08-11 11:27:38,885 INFO: Reconstruction 2: 9 images, 3483 points
2023-08-11 11:27:38,885 INFO: Reconstruction 3: 8 images, 4630 points
2023-08-11 11:27:38,885 INFO: Reconstruction 4: 8 images, 1237 points
2023-08-11 11:27:38,885 INFO: Reconstruction 5: 8 images, 960 points
2023-08-11 11:27:38,885 INFO: Reconstruction 6: 6 images, 2492 points
module>
    commands.command_runner(
  File "/home/meson/Applications/src/OpenSfM/opensfm/commands/command_runner.py", line 38, in command_runner
    command.run(data, args)
  File "/home/meson/Applications/src/OpenSfM/opensfm/commands/command.py", line 13, in run
    self.run_impl(data, args)
  File "/home/meson/Applications/src/OpenSfM/opensfm/commands/create_rig.py", line 15, in run_impl
    create_rig.run_dataset(dataset, args.method, json.loads(args.definition), True)
  File "/home/meson/Applications/src/OpenSfM/opensfm/actions/create_rig.py", line 26, in run_dataset
    rig.create_rigs_with_pattern(data, definition)
  File "/home/meson/Applications/src/OpenSfM/opensfm/rig.py", line 357, in create_rigs_with_pattern
    reconstructed_instances = count_reconstructed_instances(
  File "/home/meson/Applications/src/OpenSfM/opensfm/rig.py", line 398, in count_reconstructed_instances
    instances_count[instances_map[s]] -= 1
KeyError: 'Left-right-106.png'

Is this a bug or perhaps I am not using this feature correctly?

Start by reproducing the command and reading opensfm/actions/create_rig.py and opensfm/rig.py, especially propose_subset_dataset_from_instances and count_reconstructed_instances. Check how opensfm/dataset.py loads the subset image directory and how filenames are mapped to instances. Done means create_rig handles this four-camera naming pattern without the missing-images error or the KeyError.