I am using React/Next.js and am fetching json data from an API. The response from fetching data says the charset is iso-8859-1. I am using utf-8 in my application.

When I try to display the fetched data in my react app some Chars (like € sign) aren't displayed. When I print it to console the € sign is displayed like this: \x80

Do I have to somehow convert the data I fetch from the API?