Internal Server Error,PayPal Issue

Hi Everyone,

 

I am getting an error which I have mention below.  While interating the paypal payment getway integration.

 

Can anyone help me it is very urgent. 

 

Error: 

 

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, [email protected] and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log.

 

 

 

Thanks,

Satya Prakash