Error when decompiling specific test case

[rbonifacio]

When we try to decompile this code:

public class Vanilla {
	public static void main(String[] args) {
		List<Student> students = Collections.emptyList();
		students.add(new Student("Pedro", 30));
		students.add(new Student("João", 25));
		
		Predicate<Student> p = s -> s.name == "Pedro";
		
		Vanilla v = new Vanilla();
		
	}
	
	public List<Student> vanilla(List<Student> students, Predicate<Student> p, Function<Student, Student> f) {
		List<Student> result = Collections.emptyList();
		boolean over = false;
		
		while(!over) {
			List<Student> sub = auxState.subList(0, auxState.size());
			
			if(p.test(auxState.get(0))) {
				result.add(f.apply(auxState.get(0)));
			}
			
			auxState = sub;
                }
		
		return result;
	}
	
	public List<Student> withFStream(List<Student> students, Predicate<Student> p, Function<Student, Student> f) {
		return Collections.emptyList();
	}

An exception occurs:

java.util.EmptyStackException
	at java.base/java.util.Stack.peek(Stack.java:102)
	at java.base/java.util.Stack.pop(Stack.java:84)
	at lang.jimple.internal.Decompiler$InstructionSetVisitor.returnIns(Decompiler.java:1269)