That endpoint requires no authentication and supports any token type.
As documented here Reference | Twitch Developers
Since you only declared the endpoint and not the method (my fault for not asking what you are trying to do)
I’m assuming you are trying to call the "Get Channel Information endpoint.
So the question is what are you actaully trying to do?
If you are trying to modify a channel title, you’ll need a token from the channel you are trying to modify. So a token for yourself, won’t be able to write to TwtichDev’s channel which is the ID you declared.