SpiderBasic

Tryed to create app again in a new folder and with the link to copy libraries from spiderbasic. Nothing got copied.
But when I put the files in the htdoc without the librarie, the result remains the same. It works on the file system but not when called on Localhost.
I checked the option to get the ...

Renamed it to index.html nothing changed.
file:///opt/lampp/htdocs/rekenmachine/index.html this works
but when localhost is running
http://localhost/rekenmachine/index.html this gives me a blanc screen
I have other websites that are running in this way on localhost. Even a phpmyadmin. So localhost ...

I copied everything that was inside the folder it was developed in. It runs fine offline. Should the .Html be called Index.html? I am on Linux Ubuntu 22.04.

Hi,

Probably doing something wrong.
I have a folder with a folder spiderbasic and all then files generated. All works fine.
But when I move this all to the htdocs folder on local host. I get a blanc screen.
What is the normal procedure to upload a spiderbasic webapp? What files schould be included ...