I'm getting "FIS_AUTH_ERROR" error when using the release build but in debug build not getting any issue, it's working completely in last week but today I'm getting this error. I have search lot's of think and getting solution but it's not be work in my end. below I'm mention the which solution I have try.
1 First solution.
2 Second solution.
I have try both above solution but it's not working my end.
Error code line:
var _deviceToken = await FirebaseMessaging.instance.getToken();
Thank in Advance.