doesn't relationship work with users table?

I am getting the error

Verify that 'trackings' and 'users' exist in the schema 'public'

Verify that 'trackings' and 'users' exist in the schema 'public'

Verify that 'trackings' and 'users' exist in the schema 'public'

Verify that 'trackings' and 'users' exist in the schema 'public'

doesn't relationship works with users table?