Most likely there's some german guy called that who used the right to be forgotten, and it's ended up poisoning the tokens.
> David Mayer may refer to: (A) David Mayer (historian) (1928–2023), American-British theatre historian (B) David Mayer de Rothschild (born 1978), British adventurer, ecologist, and environmentalist (C) David R. Mayer (born 1967), American politician Akhmed Chatayev (D) David Mayer (1980–2017), Chechen Islamist and terrorist
The part about this which is weird is it's not like GPT would have access to information about him that's not already public on the web. If this is a deliberate censorship PR decision, it's incredibly stupid and backfiring. What else explains this behavior?
[1] https://www.theguardian.com/world/2018/dec/16/akhmed-one-arm...
Alternatively, you can try the legacy GPT-4 model, which lacks web search capabilities—it also produces the same error.
This suggests the issue may not be related to the search functionality or the model itself, but rather to the "moderation layer" in the ChatGPT web product.