Twitter App Configuration and Errors

The Twitter login is somehow not working for me https://www.gstnforum.com/ on Choosing Twitter login option its opening a popup window https://www.gstnforum.com/auth/twitter

Please guide me in this processes what should i do. Thanks

Please consult your error logs so we can see what the 500 error is ?

Resolved
• The Keys were wrongly placed there was a space in between.Saw when enabled debugging. Silly me ?