A question when I run the code of GLT Stage II

[pumpkin-vera]

==> Create pseudo labels for unlabeled target domain
Traceback (most recent call last):
File "sbs_trainkmeans.py", line 537, in
main()
File "sbs_trainkmeans.py", line 166, in main
main_worker(args)
File "sbs_trainkmeans.py", line 296, in main_worker
cluster.train(moving_avg_features)
File "/home/lzshang/anaconda3/envs/slz_udaabs3/lib/python3.7/site-packages/faiss/init.py", line 734, in train
clus.train(x, self.index, weights)
File "/home/lzshang/anaconda3/envs/slz_udaabs3/lib/python3.7/site-packages/faiss/init.py", line 85, in replacement_train
self.train_c(n, swig_ptr(x), index)
File "/home/lzshang/anaconda3/envs/slz_udaabs3/lib/python3.7/site-packages/faiss/swigfaiss.py", line 5059, in swig_ptr
return _swigfaiss.swig_ptr(a)
ValueError: input not a numpy array

I have check the type of moving_avg_features, is numpy.ndarray