This reply is speculative but based on observation. Over the past several (5+, if memory serves) years various users from within the PRC have reported issues accessing various portions of NVIDIA’s web site, including downloads of machine-learning related materials. Often these issues would manifest as “strange” error messages.
In all cases that I remember these issues magically disappeared when those users switched to access via VPN (via Hongkong?). This suggests that these access issues were related to the Great Firewall of China. My understanding is that (1) use of VPN in the PRC is highly regulated; (2) the Great Firewall has been enhanced over the years to be largely impervious to attempts to bypass it with VPN.
I note that at this time there may also be a potentially generic issue with international access to NVIDIA’s site that seems tentatively associated with the CDN, as discussed in this thread: Online Documentation for old CUDA Versions