Failed to validate oauth signature and token


#1

I dont know what this error means?

“Failed to validate oauth signature and token”

The output of request token is as below:

OAuthRequest Object
(
[parameters:OAuthRequest:private] => Array
(
[oauth_version] => 1.0
[oauth_nonce] => 2438535472c52250345e21eaed8a5ebf
[oauth_timestamp] => 1398678893
[oauth_consumer_key] => q4k7WUoRTEKZqqZb28YN7Jawp
[oauth_callback] => Array
(
[oauth_callback] => http://mydomain.com/callback/twitter/15
)

    )

[http_method:OAuthRequest:private] => GET
[http_url:OAuthRequest:private] => https://api.twitter.com/oauth/request_token
[base_string] => 

)

Failed to validate oauth signature and token