VPS Hosting Help Website Not Working Properly

i need bit of help with vps hosting.
I uploaded some website but it seems like it’s having trouble reading the code and run it on the website.
I think it is having trouble reading text/javascript script in html code
Any tips on how to fix this?
Currently using
vestacp control panel hosted on vps hosting.

I shows the landing page but not really runing javascript properly on internet explore and firefox but shows as 404 on chrome any ideas?