initiateOnDeviceConversionMeasurementWithEmailAdress failed

[alexanderkorus-oskar]

Hi,

I'm currently implementing On-Device Measurement in our Flutter app and used
initiateOnDeviceConversionMeasurementWithEmailAdress() method to instantiate it.
I also linked in the dependency GoogleAppMeasurementOnDeviceConversion.

But after initialization I've got the following error message:
10.29.0 - [FirebaseAnalytics][I-ACS023261] Failed to initiate on-device conversion measurement. Attempted to initiate outside the first open window.

I can't find anything about this error message in the web and not sure how to handle this issue. I called the method right after login when I get the email address. I can't reproduce it in our old native app. Does anyone know this issue what it means?

Thanks in advance!