How To get rid of this technical problem?

[rohitkanzariya]

Hi all, This post is regarding a technical glitch related to my website handling. where I got a lot of feedback from the visitors about this problem, so please can anyone help me out to get rid of this problem? With this question, I am attaching an image of the problem also, for a reference.

 

[dnk]

What type of cms are you using? Some files may be deleted

 

[Helmuts]

404 means that the page you are trying to load doesn't exist