请问您之前写的mmdetection问题合集里面的，问题9的代码是在哪里加进去的哦？我出现这样的报错
[06/06 16:10:06 detectron2]: Full config saved to /home/lixinru/Vir_env/unilm-master/dit/output/config.yaml
Traceback (most recent call last):
File "/home/lixinru/Vir_env/unilm-master/layoutlmv3/examples/object_detection/train_net.py", line 122, in <module>
args=(args,),
File "/home/lixinru/anaconda3/envs/layoutmv3/lib/python3.7/site-packages/detectron2/engine/launch.py", line 82, in launch
main_func(*args)
File "/home/lixinru/Vir_env/unilm-master/layoutlmv3/examples/object_detection/train_net.py", line 97, in main
trainer = MyTrainer(cfg)
File "/home/lixinru/Vir_env/unilm-master/layoutlmv3/examples/object_detection/ditod/mytrainer.py", line 389, in __init__
data_loader = self.build_train_loader(cfg)
File "/home/lixinru/Vir_env/unilm-master/layoutlmv3/examples/object_detection/ditod/mytrainer.py", line 621, in build_train_loader
return build_detection_train_loader(cfg, mapper=mapper)
File "/home/lixinru/anaconda3/envs/layoutmv3/lib/python3.7/site-packages/detectron2/config/config.py", line 207, in wrapped
explicit_args = _get_args_from_config(from_config, *args, **kwargs)
File "/home/lixinru/anaconda3/envs/layoutmv3/lib/python3.7/site-packages/detectron2/config/config.py", line 245, in _get_args_from_config
ret = from_config_func(*args, **kwargs)
File "/home/lixinru/anaconda3/envs/layoutmv3/lib/python3.7/site-packages/detectron2/data/build.py", line 343, in _train_loader_from_config
proposal_files=cfg.DATASETS.PROPOSAL_FILES_TRAIN if cfg.MODEL.LOAD_PROPOSALS else None,
File "/home/lixinru/anaconda3/envs/layoutmv3/lib/python3.7/site-packages/detectron2/data/build.py", line 240, in get_detection_dataset_dicts
dataset_dicts = [DatasetCatalog.get(dataset_name) for dataset_name in names]
File "/home/lixinru/anaconda3/envs/layoutmv3/lib/python3.7/site-packages/detectron2/data/build.py", line 240, in <listcomp>
dataset_dicts = [DatasetCatalog.get(dataset_name) for dataset_name in names]
File "/home/lixinru/anaconda3/envs/layoutmv3/lib/python3.7/site-packages/detectron2/data/catalog.py", line 58, in get
return f()
File "/home/lixinru/anaconda3/envs/layoutmv3/lib/python3.7/site-packages/detectron2/data/datasets/coco.py", line 500, in <lambda>
DatasetCatalog.register(name, lambda: load_coco_json(json_file, image_root, name))
File "/home/lixinru/anaconda3/envs/layoutmv3/lib/python3.7/site-packages/detectron2/data/datasets/coco.py", line 76, in load_coco_json
cat_ids = sorted(coco_api.getCatIds())
File "/home/lixinru/anaconda3/envs/layoutmv3/lib/python3.7/site-packages/pycocotools/coco.py", line 168, in getCatIds
cats = self.dataset['categories']
KeyError: 'categories'
该回答通过自己思路及引用到GPTᴼᴾᴱᴺᴬᴵ搜索,得到内容具体如下：
对于mmdetection问题合集的问题9，我没有给出代码，因为它只是一个配置文件的问题。报错信息中提到了KeyError: 'categories'，这意味着在使用COCO数据集时，数据集中没有找到'categories'这个关键字，可能是因为数据集文件缺失或格式不正确导致的。
为了解决这个问题，您可以检查数据集文件是否存在，并确保它的格式正确。另外，您也可以检查配置文件中数据集的路径是否正确，并确保数据集中包含了'categories'这个关键字。如果您是从其他来源获取的数据集，请确保数据集文件的完整性和正确性。
如果以上回答对您有所帮助，点击一下采纳该答案～谢谢