Can not destroy DONE task

Hi all

I'm trying to remove task on server, here is the API

public static void destroyPendingTasksByProcessContext(String processKey) throws EnvironmentNotAvailableException, PersistencyException, Exception{
        SecurityManagerFactory.getSecurityManager().executeAsSystem(() -> {
            TaskQuery taskQuery = TaskQuery.create()
              .where().customVarCharField5().isEqual(processKey);
            List<ITask> tasks = Ivy.wf().getTaskQueryExecutor().getResults(taskQuery);
            tasks.forEach(destroyTask -> {
                destroyTask.destroy();
            });
            return StringUtils.EMPTY;
        });
    }

in the query you can see i use a processkey as a flag to destroy all tasks which are related to my project. And i got this exception:

Caused by: java.lang.IllegalStateException: State of Task must be one of the following values DELAYED, SUSPENDED, PARKED, RESUMED, UNASSIGNED, FAILED, READY_FOR_JOIN, JOINING, JOIN_FAILED, CREATED, WAITING_FOR_INTERMEDIATE_EVENT but is DONE (The task might have been finished by another user.)

How can we solve it? Thanks