HTML website showing error 404 on mobile but working fine on PC or Laptops

[yash30]

URL: http://sino-alliance.com/web/index.html

It's working fine on PCs and Laptops but on mobile showing error 404.

Please help to solve this issue as soon as possible

Regards,
Yashesh

 

[yash30]

I have changed URL

URL: http://sino-alliance.com/demo/index1.html

It's working fine on PCs and Laptops but on mobile showing error 404.

Please help to solve this issue as soon as possible

Regards,
Yashesh

 

[wattie]

404 on desktop here.