I tried to access one movie called Unknown from 2011, then I noticed almost any movie that has the title Uknown (or rather the title in the URL is Unknown) fails with the following error message:

Request blocked Something went wrong with your request. Usually this is a permanent error.

These are the links I noticed the error on:

• https://www.themoviedb.org/movie/48138-unknown
• https://www.themoviedb.org/movie/9828-unknown
• https://www.themoviedb.org/movie/926378-unknown
• https://www.themoviedb.org/movie/798638-unknown
• https://www.themoviedb.org/movie/318462-unknown
• https://www.themoviedb.org/movie/900736-unknown
• https://www.themoviedb.org/movie/642073-unknown
• https://www.themoviedb.org/movie/746645-unknown

There is this movie, which is called Unknown, but may have been renamed since its URL indicates something else, and this one is working: https://www.themoviedb.org/movie/107679-time-travelers-3-the-fight-for-freedom