I have a similar problem. Tried but got the message "Authorization header required. Must follow the scheme, 'Authorization: Bearer <ACCESS TOKEN>'". The same accss token and ID used in python code have no problem at all.
@v Did you check the response body?
My problem shouldn't be related to V's problem, but it may be related if there is an issue on LINE's server.
I continue to get a 429 Error (statusText: 'Too Many Requests'), while making PUSH request, despite my monthly message is still at 489/500. My monthly number of requests is also still way below the limit of 100,000 requests per minute and 1,700 requests per second limit.
Is it possible that there is an issue with LINE's server?
Kindly help @@矢崎, many thanks!
Does the account (Ucf633f17c6198XXXXXXXXXXXXXXXXX) added your bot (associated with channel access token) as a friend?