Report can't open in the web portal, just downloaded in the browser window

Hi,

I'm new with Power BI Report Server on promises. I prepared the environment (installation & configuration) with the last version. The web portal work to me, but the problem focus in 2 points:

• The first time I tried to open my report (created before with normal power bi desktop), the power bi desktop RS show me message impossible to open  the document;The queries were created with a more recent version of Power BI Desktop and may not work with your version. Please install the latest version to avoid errors during the refresh process. But if I close the message, the document opened. I tried also to save the file as report server placement, I failed with my link(I'l sure it's right) but I got a message that our server inexistant with that address.