This is what I type into my terminal (Arch Linux), but it returns 404. Other calls such as just using kraken/teams seems to work, but this call (taken from the API reference’s list) doesn’t work. I’ve called it in Python with the correct headers; client-id and accepting v5+json, but it doesnt seem to work there either.
If you’re getting a 404 it’s likely because you’re not making a request to the v5 api, as that endpoint doesn’t exist in v3 (the default) which would explain the 404. You need to add either the api_version=5 querystring param to the URL, or the Accept: application/vnd.twitchtv.v5+json header, to the request.
Can you show us the code you’re trying to use because that endpoint appears to be working fine on my end.