I keep getting this error whenever I tried to validate the rdf file in the following location
whats wrong with it ? please help .

Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
This is not a valid RDF/XML file. Every line in this file starts with a line number. This is probably because you copy-pasted it from somewhere. These line numbers are not allowed in RDF/XML and you have to get rid of them.
There might still be another problem that causes the encoding/UTF-8 error. This usually happens when you have special characters in the file and don’t save it using UTF-8 encoding. But fix the error with the line numbers first and then this will be clearer.
Another unrelated problem: In
xmlns:u="http://awmarmo.net46.net/Schema.rdf"there’s a hash “#” missing at the end of the URL. Namespace URIs in RDF basically always end either in a slash “/” or hash “#”. If you forget them, things break.