Dynamics NAV 2017 cannot connect to PowerBI content pack

v-caliao-msft,

Thanks for suggestion.

I tried to do tracing with Fiddler but unfortunately I'm not good in reading these results and understanding what's wrong from there. I'll add this session log here:

I can see that gateway lines are showing some errors but I can't understand the problem. These lines #7 and #8 responses are saying just code=Unknown Error".

I  have on-premise gateway installed and it's working correctly with my uploaded file and also in "Manage gateways" section are both gateway and data source OK. I'm using the same data source for connecting with Dynamics NAV content pack but without success.

I did look also Fiddler log #5 response logs and maybe there is something more interesting:

I don't know whether it's OK that it shows here two gateways. The second one is correct but what is this first one? 

If I'm looking Fiddler log rows #7 and #8 then there is gateway number 429496 that is an empty gateway. The same is with datasources. In Fiddler log it shows in response also two datasources and second is the correct one but log rows #7 and #8 are using the first one.

Thanks in advance,

Anti