Hello!
I finally start to build my first PowerApps web portal. And I stuck in connection with database. Previous, when I build mobile versions, it was very simple, but now I can`t figure out how I can connect with external database. I tried to connect with OneDrive and GoogleDrive spredsheets, but in both ways I get warning: Exception: DataSource.Error: Data type is HTML, but we do not expected this format. Probably URL is incorrect.
It looks like this (sorry, I cannot change my native language settings)

And they don`t let me go further... 😞
Can you suggest me, how I can make connection with external database and also operate with database data? Maybe you can suggest me some good tutorials how to get data in my PowerApps web portal?