Nullpointer Exception while adressing an object in a ArrayList

Question

I am trying to end a loop when in two different instances: if it is empty and if the objects inside are null. However, when the program executes the second if-statement, I get nullPointerException, what am I doing wrong? (The statements are within a for loop but there is nothing in between them)

            if(ER.isEmpty()){
                System.out.println(ER.size());
                break;
            }
            if(ER.get(0).equals(null)){
                System.out.println(ER.get(0));
                break;
            }