Sign In With Slack - Invalid scopes: identity.basic, identity.avatar

I've set up my slack app to be installed using Oauth2.0 successfully calling

https://slack.com/oauth/v2/authorize?client_id=<myAppsClientId>&scope=chat:write,commands,incoming-webhook,users:read&user_scope=chat:write,users:read

but when i try to use Sign In With Slack (So user can manage their slack on my web app) I use

https://slack.com/oauth/v2/authorize?scope=identity.basic,identity.avatar&client_id=<myAppsClientId>

The user gets the error on the slack url (before being redirected to my app):

Error details
  Invalid permissions requested
  Invalid scopes: identity.basic, identity.avatar

Since the add to slack and sign in with slack both call the same uri, im assuming the scope params are what separate the two. Not sure where Im going wrong because I followed the docs and used the button they generated for me.

Solution

Ok I actually was able to get it to work by NOT using v2 for Sign In With Slack. But I HAD to use v2 for Add to Slack.

So using /oauth/v2/authorize and /api/oauth.v2.access for add to slack and /oauth/authorize and /api/oauth.access for signin with slack

I don't think it should work like this but it's the only combo that's working.