All calls to https://twitter.com/oauth/request_token have started to return error "401 Unauthorized"

[MohanDeoche]

i am try to broadcast my website message on Twitter
and sending request using
https://twitter.com/oauth/request_token?oauth_callback=http%3A%2F%2Flocalhost%2Fmembers%2F7985d7b6-12e3-461e-8f54-9df40114f439%2Fmessaging%2Ftwittercallback&oauth_consumer_key=5zGDNbw4E1aX6aHAUSQHLQ&oauth_nonce=1909065&oauth_signature_method=HMAC-SHA1&oauth_timestamp=1361793396&oauth_version=1.0&oauth_signature=XTW1KhFbrqf9lM4naxCRPiJ8i1U%3D

this url but its sending response null with 401 unauthorized errod

[episod]

Use up-to-date paths such as https://api.twitter.com/oauth/request_token

[niall]