Scheduled data refresh for local excel file

Hello,

I'm using Power BI Report Server October 2017 on a virtual machine and I'm using as a data source for the moment just a local excel file.

I update the excel every day and I want to set up the Power BI Report Server for scheduler refresh.  When I try to do this I have the following error: Scheduled data refresh is unavailable for files not mapped to a network drive path.

I have nothing else installed like getaway, etc., because i don't know if I need to. Here is the error:

Thanks