'Sound continues after tab close in pyqt5

I'm making a web browser using pyqt5 just for fun and I have seen that when I close a tab the audio that was playing in that tab continue plays until I quit the browser. Any ideas how to fix that?

Edit:

def close_current_tab(self, i):

        if self.tabs.count() < 2:
            return

        self.tabs.removeTab(i)
browsertabspyqt5


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