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facebookresearch/detectron2

Detectron2 is a platform for object detection, segmentation and other visual recognition tasks. · Python · 428 source files

Analyzed at a2f4a8771a on 2026-08-27. 47 documented errors.

Code / MessageTypeSeverityTags
Cannot match one checkpoint key to multiple keys in the mode
exception error checkpoint, state-dict, model-loading, detectron2
model not present in the catalog: {}
exception error model-zoo, catalog, pretrained-weights
File {path} not found on main worker.
exception error distributed, checkpoint, file-not-found, ddp
Unsupported query remaining: f{queries}, orginal filename: {
exception error checkpoint, url-query, invalid-argument
Class with @configurable must have a 'from_config' classmeth
exception error config, configurable, detectron2, init
{name} must take 'cfg' as the first argument!
exception error config, configurable, signature, detectron2
target of LazyCall must be a callable or defines a callable!
exception error lazy-config, detectron2, type-error, instantiation
Config file {filename} has syntax error!
exception error config-file, syntax-error, lazy-config, python
Relative import of directories is not allowed within config
exception error config-file, relative-import, lazy-config
Cannot import from {cur_file_no_suffix}.
exception error config-file, relative-import, lazy-config, directory
Cannot import name {relative_import_path} from {original_fil
exception error config-file, import-error, file-not-found, lazy-config
Config file {filename} has to be a python or yaml file.
exception error config-file, file-extension, lazy-config
Trying to update key {key}, but {prefix} is not a config, bu
exception error config-override, omegaconf, lazy-config, hydra
deletion is not yet a supported override
exception error config-override, hydra, lazy-config, not-implemented
total_batch_size and single_gpu_batch_size are mutually inco
exception error dataloader, batch-size, detectron2, config
Unknown training sampler: {}
exception error dataloader, sampler, detectron2, config
Dataset '{}' is not registered! Available datasets are: {}
exception error dataset, registry, detectron2
Attribute '{}' does not exist in the metadata of dataset '{}
exception error metadata, registry, detectron2
Attribute '{key}' does not exist in the metadata of dataset
exception error metadata, registry, detectron2
Unsupported type for argument `serailzie`: {serialize}
exception error detectron2, typeerror, argument-validation, serialization
No built-in metadata for dataset {}
exception error detectron2, metadata, dataset-registration, keyerror
Unknown geometric structure {}
exception error detectron2, cityscapes, shapely, polygon-conversion
One annotation of image {image_id} contains empty 'bbox' val
exception error detectron2, coco, dataset-validation, bbox
Encountered category_id={annotation_category_id} but this id
exception error detectron2, coco, category-id, keyerror
bbox has to be 1-dimensional. Got shape={bbox.shape}.
exception error detectron2, coco-export, numpy, bbox-shape
bbox has to has length 4 or 5. Got {bbox}.
exception error detectron2, coco-export, bbox-length, validation
Unknown segmentation type {type(segmentation)}!
exception error detectron2, coco-export, segmentation, rle, typeerror
No built-in metadata for dataset {}
exception error detectron2, lvis, metadata, dataset-registration
Mismatched image shape{}, got {}, expect {}.
exception error detectron2, image-size, dataset-metadata, data-integrity
Failed to use mask_format=='polygon' from the given annotati
exception error
anchor_boundary_thresh is a legacy option not implemented fo
exception error detectron2, rrpn, config, anchors
bias_lr_factor requires base_lr
exception error detectron2, optimizer, solver, config
Conflicting overrides for 'bias'
exception error detectron2, optimizer, conflicting-config
lr_factor_func requires base_lr
exception error detectron2, optimizer, solver
Unknown LR scheduler: {}
exception error detectron2, lr-scheduler, config
Unknown warmup method: {}
exception error detectron2, lr-scheduler, warmup, config
_LRMultiplier(multiplier=) must be an instance of fvcore Par
exception error detectron2, lr-scheduler, fvcore, type-mismatch
Milestones should be a list of increasing integers. Got {}
exception error detectron2, lr-scheduler, milestones, config
Conversion from BoxMode {} to {} is not supported yet
exception error detectron2, box-mode, geometry, not-implemented
Cannot find field '{}' in the given Instances!
exception error detectron2, instances, attribute-error
Instances index out of range!
exception error detectron2, instances, index-error
Empty Instances does not support __len__!
exception error detectron2, instances, len, empty-result
`Instances` object is not iterable!
exception error detectron2, instances, iteration
Unsupported type {} for concatenation
exception error detectron2, instances, concatenation, type-mismatch
Cannot create PolygonMasks: Expect a list of list of polygon
exception error detectron2, polygon-masks, annotation-format
Cannot create polygons: Expect a list of polygons per instan
validation error detectron2, polygon-masks, annotation-format
Unsupported: ONNX export of repeat_interleave for unknown re
exception error onnx, export, pytorch, repeat-interleave, dynamic-shape