enviodev/hyperindex

AI Summary: Improve the error message displayed when an invalid HyperSync token is used. The current error message is unclear and doesn't guide the user towards the correct solution (replacing the placeholder token in the .env file). The task involves modifying the error handling within the HyperIndex application to provide a more informative and user-friendly error message that specifically points out the issue with the token and suggests copying the correct token from the .env.example file.