Error

I have trouble with oneof my pages. I received different messages: the connections broken, or error 404,
This is the latest: ttp%3A%2F%2F0.gravatar.com%2Favatar%2Fad516503a11cd5ca435acc9bb6523536%3Fs%3D64&r=G’ class=’avatar avatar-64 photo’ height=’64’ width=’64’ />Diana Moschendiana
What can I do?
Thank you