If the error message includes 'o que é', could that indicate a specific character encoding issue related to Portuguese characters?

While the error itself isn't directly caused by the Portuguese phrase 'o que é', its presence in the JSON string *could* highlight a character encoding problem if those characters aren't correctly encoded in UTF-8. If the JSON source isn't properly configured for UTF-8, Portuguese characters (and other non-ASCII characters) might be misinterpreted, leading to the 'Unexpected token' error. Verify the JSON source's encoding and ensure it's consistent with your parser's expectations.