File sap/zhelloworld/index.html NOT found!

Hey experts,

I created a simple HelloWorld app in the WebIDE on HCP and now want to upload that app on my on-premise gateway.

Therefore I exported the project-folder and downloaded it as a .zip. Then I uploaded the unpacked folder on my Gateway Server (7.5) and got the following messages:

and after upload

Now when I use SICF to test my service I get the error index.html not found.

Can you guyes please help? 😊

I am a total newbee. So already a explanation is really helpfull 😊