Flutter - Provider working for Web app but when I run on Android it breaks?

I am creating a cross platform flutter app and started developing on the Web version. I have used provider throughout to pass various pieces of data around my app and thus far it works well.

However, when I run my app on Android, the same provider I have used to pull data from Firestore doesn't register any values. When I run on web, I get 2 when I print the length of my list of values whereas on Android, I get 0.

I appreciate there isn't a great deal of information here, but i'm wondering if anyone else has experienced the same issue? And if so, how did you resolve it? Thanks.