TypeError: You provided 'undefined' where a stream was expected

Question

I have an Ionic app that has a user provider with a signup() method:

doSignup() {
  // set         


        

Answer 1

Resolved here the right way :)

I have been facing this issue when trying to authenticate a user using JSON Web Token. in my case it's related to authentication interceptor.

Sending a request to authenticate a user doesn't have to provide a token since it doesn't exist yet.

Check that your interceptor include this:

if (req.headers.get('No-Auth') == "True")
            return next.handle(req.clone());

And that you provide {'No-Auth':'True'} to your header's request like this:

  authenticateUser(user): Observable {
    const headers = new HttpHeaders({'No-Auth':'True'});
    headers.append('Content-Type', 'application/json');
    return this.httpClient.post(`${this.apiEndpoint}/auth/authenticate`, user, {headers: headers});
  }