Fiori Approve Purchase Orders error in index page

Hi,

I already installed the old component of Fiori Approve Purchase Order and it runs well. Now I have the new version, SAP Fiori for SAP ERP 1.0. I installed the UIX01EAP. I activated the sap/bc/ui5_ui5/sap/mm_po_apv when I run it, then it show me the error as below.

It seems like index.html is not in there. Wondering why it happens.

Thanks.