新人跑例子遇到了点问题，希望有大佬闲暇帮忙指点一下，小白不胜感激，提前谢过。

问题表述：

小白想在本地的pycharm中跑商超检测数据集，在ai studio中下载了商超数据集，数据集格式为

coco|train2017||annotations||| instances_train2017.json  ||| instances_val2017.json      

     |train2017||train_image(训练的图片)

     |val2017||val_image(验证的图片)

     |test2017  ||test_image(测试的图片)

 小白目的：  想利用paddledetection中的  yml文件  训练这些数据并且生成模型  做预测，选用了paddledetection/configs/faster_rcnn/faster_rcnn_r50_fpn_1x_coco.yml文件

训练指令是：python -u tools/train.py -c configs/faster_rcnn/faster_rcnn_r50_fpn_1x_coco.yml
-o use_gpu=true

并且修改了数据集的路径和json文件路径，和num_classes

之后运行训练指令，后发生，在c盘重新下载了coco数据集（项目是在f盘），等数据集下载之后开始报错。

错误类型为：[03/22 19:18:26] ppdet.data.source.coco WARNING: Illegal image file: F:/paddledetection_work3.7.4/PaddleDetection/dataset/coco/train2017/000000575958.jpg, and it will be
ignored
[03/22 19:18:26] ppdet.data.source.coco WARNING: Illegal image file: F:/paddledetection_work3.7.4/PaddleDetection/dataset/coco/train2017/000000575961.jpg, and it will be
ignored
[03/22 19:18:26] ppdet.data.source.coco WARNING: Illegal image file: F:/paddledetection_work3.7.4/PaddleDetection/dataset/coco/train2017/000000575964.jpg, and it will be
ignored
[03/22 19:18:26] ppdet.data.source.coco WARNING: Illegal image file: F:/paddledetection_work3.7.4/PaddleDetection/dataset/coco/train2017/000000575971.jpg, and it will be
ignored
[03/22 19:18:26] ppdet.data.source.coco WARNING: Illegal image file: F:/paddledetection_work3.7.4/PaddleDetection/dataset/coco/train2017/000000575978.jpg, and it will be
ignored
[03/22 19:18:26] ppdet.data.source.coco WARNING: Illegal image file: F:/paddledetection_work3.7.4/PaddleDetection/dataset/coco/train2017/000000575980.jpg, and it will be
ignored
[03/22 19:18:26] ppdet.data.source.coco WARNING: Illegal image file: F:/paddledetection_work3.7.4/PaddleDetection/dataset/coco/train2017/000000575997.jpg, and it will be
ignored
[03/22 19:18:26] ppdet.data.source.coco WARNING: Illegal image file: F:/paddledetection_work3.7.4/PaddleDetection/dataset/coco/train2017/000000576001.jpg, and it will be
ignored
[03/22 19:18:26] ppdet.data.source.coco WARNING: Illegal image file: F:/paddledetection_work3.7.4/PaddleDetection/dataset/coco/train2017/000000576010.jpg, and it will be
ignored
[03/22 19:18:26] ppdet.data.source.coco WARNING: Illegal image file: F:/paddledetection_work3.7.4/PaddleDetection/dataset/coco/train2017/000000576011.jpg, and it will be
ignored
[03/22 19:18:26] ppdet.data.source.coco WARNING: Illegal image file: F:/paddledetection_work3.7.4/PaddleDetection/dataset/coco/train2017/000000576012.jpg, and it will be
ignored
[03/22 19:18:26] ppdet.data.source.coco WARNING: Illegal image file: F:/paddledetection_work3.7.4/PaddleDetection/dataset/coco/train2017/000000576015.jpg, and it will be
ignored

...

...

Traceback (most recent call last):
File "tools/train.py", line 177, in
main()
File "tools/train.py", line 173, in main
run(FLAGS, cfg)
File "tools/train.py", line 118, in run
trainer = Trainer(cfg, mode='train')
File "F:\paddledetection_work3.7.4\PaddleDetection\ppdet\engine\trainer.py", line 77, in __init__
self.dataset, cfg.worker_num)
File "F:\paddledetection_work3.7.4\PaddleDetection\ppdet\data\reader.py", line 163, in __call__
self.dataset.parse_dataset()
File "F:\paddledetection_work3.7.4\PaddleDetection\ppdet\data\source\coco.py", line 244, in parse_dataset
assert ct > 0, 'not found any coco record in %s' % (anno_path)
AssertionError: not found any coco record in C:\Users\tang/.cache/paddle/dataset\coco\annotations/instances_train2017.json

尝试解决的方案：换一个yml文件训练coco格式的数据集，同时更改了yml文件中数据集的位置。还是报了和这个一样的错误。用的是F:\paddledetection_work3.7.4\PaddleDetection\configs\ppyolo\ppyolo_r18vd_coco.yml  文件

感觉好像是coco数据集格式的问题，但是具体哪里出了问题，有点不懂（数据集的图片和json文件都是网上找的，没有自己标注，没做转换  想先跑一下，但是出了点问题）。

希望得到一些帮助。多谢大佬们了，