A problem about "regex_search: could not find match for (?:v=|\/)([0-9A-Za-z_-]{11})."

[LiuXinqi12]

Hi, when I run your program "python download_images.py --vid VIDEO_ID", there is a problem "regex_search: could not find match for (?:v=|/)([0-9A-Za-z_-]{11})."occured. It seems to be related to pytube, but after I modified it according to the suggestions on github(https://github.com/nficano/pytube/issues/312#issuecomment-447660395), it still doesn't work, so I cannot get the dataset. In addition, program "python download_images.py --set train" seem can work. The pytube version I use is "9.6.4", can you give me some help? Thank you very much!