self.model, export_subnet_mode='mutator', slice_weight=True) AttributeError: 'ItePruneValLoop' object has no attribute 'model'

[3114917790]

when i use python ./tools/train.py configs/pruning/mmdet/dcff/dcff_faster_rcnn_resnet50_8xb4_coco.py

Traceback (most recent call last):
File "./tools/train.py", line 121, in
main()
File "./tools/train.py", line 117, in main
runner.train()
File "/home//anaconda3/envs/openmmlab/lib/python3.8/site-packages/mmengine/runner/runner.py", line 1745, in train
model = self.train_loop.run() # type: ignore
File "/home//anaconda3/envs/openmmlab/lib/python3.8/site-packages/mmengine/runner/loops.py", line 102, in run
self.runner.val_loop.run()
File "/home//anaconda3/envs/openmmlab/lib/python3.8/site-packages/mmrazor/engine/runner/iteprune_val_loop.py", line 35, in run
self._save_fix_subnet()
File "/home//anaconda3/envs/openmmlab/lib/python3.8/site-packages/mmrazor/engine/runner/iteprune_val_loop.py", line 44, in _save_fix_subnet
self.model, export_subnet_mode='mutator', slice_weight=True)
AttributeError: 'ItePruneValLoop' object has no attribute 'model'