Pyside2多线程关闭，有谁知道该怎么处理么？

[十秒耿直拆包选手]

RT，官方给的文档是c++的，写了后始终有保存内容“Process finished with exit code 1073741845”。我的多线程代码如下：

from PySide2.QtCore import QThread
from PySide2.QtCore import QObject
from PySide2.QtWidgets import QApplication
from PySide2.QtWidgets import QFileDialog
# 信号槽
from PySide2.QtCore import Signal
from PySide2.QtCore import Slot
from process_package.process_data_module import TrackDataProcessing


class FileManager(QObject):
    def __init__(self):
        super(FileManager, self).__init__()

        self.__init_instance()
        self.__init_connections()


    def __del__(self):
        # print('delete')
        self.__split_data_thread.quit()
        self.__split_data_thread.wait()


    def split_data_to_new_file(self):
        """
        打开对话框选择要拆分数据的文档，将文档名列表传给后端处理

        """
        # 获取打开的所有文件名列表
        files_in_list = QFileDialog.getOpenFileNames()[0]

        # 打开文件数不为0，将文件名列表传给后端处理
        if 0 != len(files_in_list):
            # 判断子线程状态，如果没有启动，则启动子线程
            self.__start_sub_thread(self.__split_data_thread, self.__track_processing)

            self.si_file_name_with_path.emit(files_in_list)


    @Slot()
    def __close_application(self):
        """
        退出程序

        """
        QApplication.closeAllWindows()


    def __init_instance(self):
        """
        初始化对象变量

        """
        self.__track_processing = TrackDataProcessing()
        self.__split_data_thread = QThread()


    def __init_connections(self):
        """
        初始化信号槽

        """
        # 信号槽新写法，推荐
        # 向槽函数传递打开文件名的列表
        self.si_close_application.connect(self.__close_application)


    def __start_sub_thread(self, thread: QThread, process: QObject):
        """
        启动将变量迁入子线程，启动子线程
        :param thread: 子线程
        :param process: 迁入子线程的变量

        """
        self.si_file_name_with_path.connect(self.__track_processing.split_data_to_different_file)
        if not thread.isRunning():
            process.moveToThread(thread)
            thread.finished.connect(process.deleteLater)
            self.si_file_name_with_path.connect(self.__track_processing.split_data_to_different_file)
            thread.start()


    # 打开的文件名及文件路径
    si_file_name_with_path = Signal(list)
    si_close_application = Signal()

我在“__del__(self)”中终止进程，在“__start_sub_thread”启动子线程，同时创建信号槽。后续读取数据什么操作都可以正常进行，就是关闭程序后有前面哪行异常，不知道线程出错到哪里了。