odata

I built a virtual database which publishes data using Odata protocol. I have been able to access the database using the url directly on  my browser as well as connecting using other tools such as Tableau, but the same URL throws an error on Power BI. This is the url i've used:

http://localhost:8080/odata4/EmpData/EmpData_Time/EmpData?$format=json

I have used odata v2-3 url as well, and though it does not throw an error, it does not bring all the records. I'm not sure why the same URL would work everywhere except with Power BI.