[ Moderator note: moved to Fixing WordPress. ]
Why when i try Login in my site the server said:
“Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, postmaster@mario.com 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.“