Is file system not allowing html api open?

Is file system not allowing html api open? I got an error while I open rpa by html api on file system mode. The error told the uivision.html not writeable. Or when I open the rpa, the rpa immediately completed. Does any method open rpa by python on filesystem?

The full error is [error]
Directory ‘C:\Users\Administrator\Desktop\uivision’ is not writable