The site about Mecanum wheel robot kit cannot be opened

#1

I opened two link on this site, but I get an error. Is it a bug?

#2

I checked the b2b website, but didn’t get the link you mentioned: https://drive.google.com/drive/folders/1s6CHCCWAlniA1mz2PUBQndSDl74nPNHU?usp=drive_open
In my mind, we usually don’t use google drive.
For more details, please let me know.