Could not authenticate you","code":32


I am having an issue recently with my app, I didn’t change anything and I was running twitter streaming’s API and I realized that it stopped, when I checked it gives me this error:

{ [Error: Could not authenticate you]
  message: 'Could not authenticate you',
  statusCode: 401,
  code: 32,
  allErrors: [ { message: 'Could not authenticate you', code: 32 } ],
  twitterReply: '{"errors":[{"message":"Could not authenticate you","code":32}]}' }

This happened when I try to make a POST on ‘friendships/create’. I am trying to follow the user using the authenticated user. Any idea on what should I do?