Facing Status Code: 403

Please your urgent support.
We are facing an issue when we try to call: https://api.twitter.com/oauth/authorize?oauth_token=
Find request details in the below 

Request URL: https://api.twitter.com/oauth/authorize?oauth_token=
Request Method: GET
Status Code: 403 
Remote Address: 104.244.42.2:443
Referrer Policy: no-referrer-when-downgrade