page not found: 404

[Balakrishna.Maganti]

steps :: application tab -> trouble shoot -> errors -> exception tab  -> 404 in search 

here there are many files with along the path is seen like .svg, .html, and so on. 

1) When i am trying to check them further i have no options to do so

so my question is how to check them for more details 

because i have checked in source code i don't see those paths and checked in putty logs i don't see there as well so i want to know from where these files are loading

Thank you 

Bala