title: The argument type 'String' can't be assigned to the parameter type 'Uri'
body: <p>I am trying to make an HTTP POST request with the flutter plugin HTTP but I am getting an error of the title.
  Does anyone know the cause of this since in my other applications this works just perfectly fine?</p>
  <pre><code>await http.post(Uri.encodeFull(&quot;https://api.instagram.com/oauth/access_token&quot;), body: {
        &quot;client_id&quot;: clientID,
        &quot;redirect_uri&quot;: redirectUri,
        &quot;client_secret&quot;: appSecret,
        &quot;code&quot;: authorizationCode,
        &quot;grant_type&quot;: &quot;authorization_code&quot;
      });
  </code></pre>