Q9.4 5 Points Read the following code snippet (same as part 9.3); Node prev= null; Node ptr front; while ( ptr.next != null ) { prev = ptr; ptr = ptr.next; } Node newNode = new Node(); newNode.item 2; newNode. next = null; prev.next = newNode; Shall we have errors when running the code for some linked list? If so, what kind of linked list will trigger errors and what is the error