菜鸟求指教， pyqt5 的 QThread 发送信号后弹出对话框未响应，怎么解决？

假设了一个场景，在处理文件的时候遇到错误，弹出警告窗口，三个按钮分别为重试、忽略或取消，可是警告窗口未响应，没有显示内容

进度条窗口，附代码链接： https://gist.github.com/allrobot/3a6449b4389a1e28a907702d38d7422b

from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
import Script
from Vam_Dialogs import InterruptDialog
from Vam_Modules import ScanPackages

class ShowProgressBar(QWidget):
    def __init__(self, MaxNumber: int,worker):
        super().__init__()
        self.worker=worker
        # 忽略代码...
        
    @pyqtSlot(str)
    def show_dialog(self,text: str):
        self.dialog = InterruptDialog.InterruptProcessing(text)
        self.dialog.retry.connect(self.worker.resume)
        self.dialog.ignored.connect(self.worker.ignore)
        self.dialog.cancel.connect(progress_bar.progress_close)
        self.dialog.cancel.connect(self.worker.quit)

'''输出依赖'''
QCoreApplication.setAttribute(Qt.AA_EnableHighDpiScaling)
QCoreApplication.setAttribute(Qt.AA_UseHighDpiPixmaps)
app = QApplication(sys.argv)
worker = ScanPackages.Worker(r'I:\VAM\Vam Pure\AddonPackages')
progress_bar = ShowProgressBar(worker.exist_vars_path.__len__(),worker)
worker.intReady.connect(progress_bar.update_progress_bar)
worker.started.connect(worker.scan_meta_json)
worker.showdialog.connect(worker.pause)
worker.showdialog.connect(progress_bar.show_dialog)
worker.finished.connect(progress_bar.progress_close)
worker.start()
app.exec_()

QThread 代码，附代码链接： https://gist.github.com/allrobot/14be27794f8a9cd7dd08de40a3e443e9

    def scan_meta_json(self) -> None:
        num=0
        for file in self.exist_vars_path:
            self.intReady.emit(self.CurrentFiles)
            num+=1
            # 上锁
            self.mutex.lock()
            if num==500:
                self.error = True
                self.error_text = f'AddonPackages{file[1:]}\n\n 文件执行权限获取失败。\n\n 请确认文件是否被系统占用。\n\n 如果已关闭文件，点击返回继续处理操作任务。'
                self.showdialog.emit(self.error_text)
            if self.isPause:
                self.condition.wait(self.mutex)
            self.CurrentFiles += 1
            print(file)
            timer = QTimer()
            timer.setSingleShot(True)
            timer.start(1)
            loop = QEventLoop()
            timer.timeout.connect(loop.quit)
            loop.exec()
            self.mutex.unlock()
        os.chdir(self.current_path)
        self.finished.emit()

请问为啥未响应？对话框自测了，能正常打开，但进度条没法调用对话框显示内容。。。

对话框代码： https://gist.github.com/allrobot/aad2aa88f8ccdd8043a857478eebfab7