My bad, this error was caused by extra / in config.json

Hi

I've installed nodebb-plugin-sso-facebook plugin to enable Facebook sing-up/ login.

I've updated app and secret key correctly in admin panel, also added website url in config.json file.

Also restarted app after this.

I'm getting following error while trying to singup from facebook singup button.

error: /auth/facebook/callback
 FacebookTokenError: Error validating verification code. Please make sure your redirect_uri  is identical to the one you used in the OAuth dialog request
    at Strategy.parseErrorResponse (/node_modules/nodebb-plugin-sso-facebook/node_modules/passport-facebook/lib/strategy.js:198:12)
    at Strategy.OAuth2Strategy._createOAuthError (/node_modules/nodebb-plugin-sso-facebook/node_modules/passport-facebook/node_modules/passport-     oauth2/lib/strategy.js:345:16)
    at /node_modules/nodebb-plugin-sso-facebook/node_modules/passport-facebook/node_modules/passport-oauth2/lib/strategy.js:171:43
    at /node_modules/nodebb-plugin-sso-facebook/node_modules/passport-facebook/node_modules/passport-oauth2/node_modules/oauth/lib/oauth2.js:177:18
    at passBackControl (/node_modules/nodebb-plugin-sso-facebook/node_modules/passport-facebook/node_modules/passport-oauth2/node_modules/oauth/lib/ oauth2.js:123:9)
    at IncomingMessage.<anonymous> (/node_modules/nodebb-plugin-sso-facebook/node_modules/passport-facebook/node_modules/passport-oauth2/            node_modules/oauth/lib/oauth2.js:143:7)
    at IncomingMessage.emit (events.js:129:20)
    at _stream_readable.js:908:16
    at process._tickCallback (node.js:355:11)

I'm running app on following setup.
AWS - ec2
nginx running on port 80
NodeBB latest git master running on port 4567

I think this error is cause of nginx

Please provide some help to solve this.
Thanks