it seems to be a bug because I was also looking for a solution and I saw that on other sites there are people who have had this problem just recently. I don't usually use stackoverflow, so forgive me for the not very detailed answer (maybe someone can add some more details). The solution that a user on reddit seems to have used, is to do the configuration only on the platforms that interest you. In my case only ios and android.

flutterfire configure --platforms=android,ios

I hope I helped you!