Error while Loading the ScanNet Dataset?

[A-suozhang]

Following the README.md
I downloaded the _vh_clean_2.ply file using the Scannet.org provided scripts
then use python -m lib.datasets.preprocessing.scannet to generate processed .ply files in the "train/test" folder under the processed_dir. I came across missing the scannetv2_train.txt file, so I download them from https://github.com/ScanNet/ScanNet/tree/master/Tasks/Benchmark. However, when I checked, the filename in it is like scene0191_00. However, the files in the processed folder are like scene0191_00.ply, thus resulting in the Error when the data loader loads data. Could you be kind enough to inform me how to properly prepare the ScanNet dataset for this codebase? Thx a lot!