output: #fixed code
                                  public List<Value> bindAsyncLoopList(
              AsyncLoopStatement asyncLoopStatement,
              Context flowContext,
              Set<SystemProperty> systemProperties,
              String nodeName) {
          Validate.notNull(asyncLoopStatement, "async loop statement cannot be null");
          Validate.notNull(flowContext, "flow context cannot be null");
          Validate.notNull(systemProperties, "system properties cannot be null");
          Validate.notNull(nodeName, "node name cannot be null");
  
          List<Value> result = new ArrayList<>();
          try {
              Value evalResult = scriptEvaluator.evalExpr(asyncLoopStatement.getExpression(), flowContext.getImmutableViewOfVariables(), systemProperties);
              if (evalResult != null && evalResult.get() != null) {
                  //noinspection unchecked
                  for (Serializable serializable : ((List<Serializable>)evalResult.get())) {
                      Value value = ValueFactory.create(serializable, evalResult.isSensitive());
                      result.add(value);
                  }
              }
          } catch (Throwable t) {
              throw new RuntimeException(generateAsyncLoopExpressionMessage(nodeName, t.getMessage()), t);
          }
          if (CollectionUtils.isEmpty(result)) {
              throw new RuntimeException(generateAsyncLoopExpressionMessage(nodeName, "expression is empty"));
          }
          return result;
      }
input: #vulnerable code 
                                  public List<Value> bindAsyncLoopList(
              AsyncLoopStatement asyncLoopStatement,
              Context flowContext,
              Set<SystemProperty> systemProperties,
              String nodeName) {
          Validate.notNull(asyncLoopStatement, "async loop statement cannot be null");
          Validate.notNull(flowContext, "flow context cannot be null");
          Validate.notNull(systemProperties, "system properties cannot be null");
          Validate.notNull(nodeName, "node name cannot be null");
  
          List<Value> result = new ArrayList<>();
          try {
              Value evalResult = scriptEvaluator.evalExpr(asyncLoopStatement.getExpression(), flowContext.getImmutableViewOfVariables(), systemProperties);
              if (evalResult.get() != null) {
                  //noinspection unchecked
                  for (Serializable serializable : ((List<Serializable>)evalResult.get())) {
                      Value value = serializable instanceof Value ? (Value)serializable : ValueFactory.create(serializable, evalResult.isSensitive());
                      result.add(value);
                  }
              }
          } catch (Throwable t) {
              throw new RuntimeException(generateAsyncLoopExpressionMessage(nodeName, t.getMessage()), t);
          }
          if (CollectionUtils.isEmpty(result)) {
              throw new RuntimeException(generateAsyncLoopExpressionMessage(nodeName, "expression is empty"));
          }
          return result;
      } 
                              #location 14 
                              #vulnerability type NULL_DEREFERENCE