user_agent_required
HTTP 400, invalid_request_error.
The request has no User-Agent header.
What to do
Send an application name and a contact, like my-app/1.0 (you@example.com).
HTTP 400, invalid_request_error.
The request has no User-Agent header.
Send an application name and a contact, like my-app/1.0 (you@example.com).