Slack App with a bot user token throws "Missing Scope" error

[ArulselvanMadhavan]

Thanks for writing this library. I'm trying to use this library for building a feature at work. What I'm testing is a simple use case. Post a message to a channel

    let response = slack::chat::post_message(
        &client,
        &token,
        &slack::chat::PostMessageRequest {
            channel: &channel_id,
            text: "Sample Message",
            ..slack::chat::PostMessageRequest::default()
        },
    )
    .await;

I'm initiating the client and setting up the token, the way it's shown in the example

    let token = env::var("SLACK_API_TOKEN").map_err(|_| "SLACK_API_TOKEN env var must be set")?;
    println!("TOKEN{:?}", token);
    let client = slack::default_client().map_err(|_| "Could not get default_client")?;
    let channel_id = env::args()
        .nth(1)
        .ok_or("must specify channel id as argument e.g. C09123456")?;

I get an error saying "Missing scope" in the response. I'm not sure where I can pass a scope as part of the authorization request. I found out that someone had run into somewhat similar issue with rtm and also the channel::history is now obsolete. I'd be happy to contribute an updated/working example, if I figure this out.

Cheers!

[dten]

sounds the same as #77 slack uses oauth for permissions and the auth token you've created does not have the required scopes granted by slack. there's explanation and link to the docs in that issue

[ArulselvanMadhavan]

Thanks @dten! This helped. Closing the issue