Make a Class diagram and ERD of following system also mark the relationship between them..

Our app is Smart Counselling Assistant Medium

Which have a

Admin:

Admin can check all the activities can do any thing can remove counselor.

Admin can conduct test for Counselor

User:

There will be a free platform where a user can his problem and Counselor can comment for the solution.

Also a user can directly hire Counselor for paid Counseling.

User can give the reviews to the counselor after getting Counselling.

User can chat with counselor

Counselor:

Counselor can comment on the post of user on platform.

And offer a user for paid service.

There will be a payment method in our System