@bobber205 speaks the truth. You should make sure that you understand all of the necessary elements to make a request to our APIs. Getting started is a great resource for this.
When using a REST client like Postman or Insomnia, you have to have the HTTP request type, the URI, the authentication method and tokens, as well as any required parameters formatted properly. Error 32 typically delivers when you don’t have the authentication worked out properly. You can get the tokens that you use in your request from a Twitter app, which you can create once you’ve been approved for a developer account.
It is also worthwhile to note that we have seen developers have issues authenticating with Postman previously. You might want to try insomnia.rest instead.