Expo Ejected App, can't get push token from Device

i developed an app using expo , i used to get fcm push token of device using expo.
now i ejected my app from expo and generated apk using android studio from there onwords i not getting device fcm push token .
but when i run my project using tunnel , i am able to get fcm push token,
i am using latest sdk (37) version.
what is the issue , please help me out…?