Working with list of items in ionic

Hi, I am working on a project based on ionic framework i have to build an application where teacher and students can interact with each. Everyone is having an account student needs to subscribe to his current sem subjects and then he is able to see all the post related to that subject.And the teacher can post notice study material etc. I have stuck now with lots of errors and don’t know how to design the system the working of entire system can anyone help me out.Git hub repository

I’d love to help. But you posted no code and you didn’t really say what are those “lots of errors”.

I have given current status in git repository
and I want to know how to structure the working of entire app.The most of the problem is related to firebase, during reading data.