Sandbox Paypal Error 404 not found

Hello all,

I have uploaded the sandbox paypal code in webhosting to check whether it is working properly.

It was working fine in my local server (wamp server) and when i host the same in 000webhost.com, it shows the page was not found in this server.

error 404 Not Found

The requested URL /us/cgi-bin/…my web host address.php" was not found on this server.

Pls help. I completed my project and was about to submit to my client when i founf this error in webhost and not in my localserver.

This is the first time I am hosting and checking the webpages.