TypeError: 'Language' object is not subscriptable

[xwcn1228]

Traceback (most recent call last):
File "src/main.py", line 144, in
Algo.train(round_n)
File "/mnt/2T/wwy/CreamFL-main/src/algorithms/MMFL.py", line 284, in train
trainer.run(self.global_img_feature, self.global_txt_feature, self.distill_index,
File "/mnt/2T/wwy/CreamFL-main/./src/algorithms/ClientTrainer.py", line 215, in run
self.tra(global_img_feature, global_txt_feature, distill_index, global_train_loader)
File "/mnt/2T/wwy/CreamFL-main/./src/algorithms/ClientTrainer.py", line 359, in tra
for i, data in enumerate(self.train_loader):
File "/home/fyl/anaconda3/envs/creamfl/lib/python3.8/site-packages/torch/utils/data/dataloader.py", line 681, in next
data = self._next_data()
File "/home/fyl/anaconda3/envs/creamfl/lib/python3.8/site-packages/torch/utils/data/dataloader.py", line 1376, in _next_data
return self._process_data(data)
File "/home/fyl/anaconda3/envs/creamfl/lib/python3.8/site-packages/torch/utils/data/dataloader.py", line 1402, in _process_data
data.reraise()
File "/home/fyl/anaconda3/envs/creamfl/lib/python3.8/site-packages/torch/_utils.py", line 461, in reraise
raise exception
TypeError: Caught TypeError in DataLoader worker process 0.
Original Traceback (most recent call last):
File "/home/fyl/anaconda3/envs/creamfl/lib/python3.8/site-packages/torch/utils/data/_utils/worker.py", line 302, in _worker_loop
data = fetcher.fetch(index)
File "/home/fyl/anaconda3/envs/creamfl/lib/python3.8/site-packages/torch/utils/data/_utils/fetch.py", line 49, in fetch
data = [self.dataset[idx] for idx in possibly_batched_index]
File "/home/fyl/anaconda3/envs/creamfl/lib/python3.8/site-packages/torch/utils/data/_utils/fetch.py", line 49, in
data = [self.dataset[idx] for idx in possibly_batched_index]
File "/home/fyl/anaconda3/envs/creamfl/lib/python3.8/site-packages/torch/utils/data/dataset.py", line 290, in getitem
return self.dataset[self.indices[idx]]
TypeError: 'Language' object is not subscriptable