Internal error Redmine after authorizing

[yuxinvalo]

I have a problem when I try to login by gitlab:
Redirect addr: http://192.168.1.35:10083/oauth2callback?code=c528d9de834b45f5876162cae99bc123411339c882c25f3ffd340308fdc3f1e2

Internal error
An error occurred on the page you were trying to access.
If you continue to experience problems please contact your Redmine administrator for assistance.
If you are the Redmine administrator, check your log files for details about the error.

Reproduce problem:
After installing omniauth_gitlab plugin, I create an application in gitlab:

And I configure the client id and secret in plugin, it works well until I click authorize :

This is my redmine info:

And I follow the info and check log of redmine, there is nothing error message ..... hummm...
What's the problem when I redirect to http://192.168.1.35:10083/oauth2callback? How can I resolve it?

[TBoonX]

I have the error: "The requested scope is invalid, unknown, or malformed."
Where do I set the scope?