Firebase Analytics stop working

[Yash Chandra verma]

Hello,
I have added Firebase Analytics to my Flutter App, and it was working by then on release & debug view. Since, I was busy in developing my app, i didn't check analytics, now recenlty, I checked & found that its not working. Now, Realtime, debug view, & event logging, all not working. I have updated packages (firebase_core & firebase_analytics), gradle file, and follow Flutter Firebase migration step, still nothing helpful. Checked many post, but didn't get a solution. Note- I have recently change my App Name, & Package Name is still same. Let me know if you need any more info. 

Thanks in advance.