Hello.
I have this PowerBI where when I add an PowerApp, I get this result "Expected value '' to be a valid RFC 3339 'full-date' or 'date-time' format. Allowed ISO 8601 format(s): 'YYYY-MM-DD', 'YYYY-MM-DDT00:00:00Z', 'YYYY-MM-DDThh:mm:ss±hh:mm'." (see picture). I have multiple Datepickers in the app who have default value set like this: "If(IsBlank(Source.'Date'),Blank(),Source.'Date')" and it seems that the error in PowerBI doesn't show when the Datepickers is blank. The PowerApps itself doesn't show any errors, only when I add to PowerBI and even then - if I close the errors, the app works correctly.
How can I fix this?