AttributeError: 'TrainerNoMeta' object has no attribute 'build_meta_train_loader'

[wqian11]

-- Process 1 terminated with the following error:
Traceback (most recent call last):
File "/home/ff/anaconda3/envs/wjj_UniT/lib/python3.8/site-packages/torch/multiprocessing/spawn.py", line 59, in _wrap
fn(i, *args)
File "/home/ff/anaconda3/envs/wjj_UniT/lib/python3.8/site-packages/detectron2/engine/launch.py", line 125, in _distributed_worker
main_func(*args)
File "/home/ff/Wjj/Code/UniT/scripts/train_VOC.py", line 49, in main
trainer = TrainerNoMeta(cfg)
File "/home/ff/Wjj/Code/UniT/../UniT/engine/defaults.py", line 259, in init
self.meta_data_loader = self.build_meta_train_loader(cfg)
AttributeError: 'TrainerNoMeta' object has no attribute 'build_meta_train_loader'