Why the example shows localhost redirected you too many times?

[hsluoyz]

Hi,

I downloaded the code and tried to run the example. I manually created two empty databases "default" and "social_test" in my localhost MySQL DB to avoid errors. Then the server runs. However, when I open http://localhost:8092 in my Chrome, it shows me the error in the picture. I don't know if there's anything else I need to do to run the example? FYI, I'm using a Win10 x64 system. Go is 1.8.1. IDE is Gogland, and the server runs from the IDE.

"C:\Program Files (x86)\JetBrains\Gogland 171.3780.106\bin\runnerw.exe" C:/Go\bin\go.exe run C:/GoPath/src/github.com/beego/social-auth/example/main.go
2017/05/18 20:07:55 [I] [asm_amd64.s:2197] http server Running on http://:8092
2017/05/18 20:08:06 [I] [main.go:241] GET / 
[beego] 2017/05/18 - 20:08:06 |      127.0.0.1| 302 |     8.0206ms|   match| GET      /     r:/
2017/05/18 20:08:06 [E] [main.go:58] SocialAuth.handleRedirect unknown provider 
[beego] 2017/05/18 - 20:08:06 |      127.0.0.1| 302 |     1.5052ms| nomatch| GET      /login
2017/05/18 20:08:06 [E] [main.go:58] SocialAuth.handleRedirect unknown provider