  
      def display_item_process(self):
          """ Override for display specific loading """
          raise NotImplementedError()
 
</s> remove     @staticmethod
    def destroy_tabs_children(tab):
        """ Destroy all tabs children
            Children must be destroyed as forget only hides display
        """
        logger.debug("Destroying children for tab: %s", tab)
        for child in tab.winfo_children():
            logger.debug("Destroying child: %s", child)
            child.destroy()

 </s> add  </s> remove         plt.subplots_adjust(left=0.100,
                            bottom=0.100,
                            right=0.95,
                            top=0.95,
                            wspace=0.2,
                            hspace=0.2)
 </s> add         self.fig.subplots_adjust(left=0.100,
                                 bottom=0.100,
                                 right=0.95,
                                 top=0.95,
                                 wspace=0.2,
                                 hspace=0.2) </s> remove class DisplayPage(ttk.Frame):
 </s> add class DisplayPage(ttk.Frame):  # pylint: disable=too-many-ancestors
    def close(self):
        """ Called when the parent notebook is shutting down
            Children must be destroyed as forget only hides display
            Override for page specific shutdown """
        for child in self.winfo_children():
            logger.debug("Destroying child: %s", child)
            child.destroy()
  
      def display_item_process(self):
          """ Override for display specific loading """
          raise NotImplementedError()
    def close(self):
        """ Called when the parent notebook is shutting down
            Children must be destroyed as forget only hides display
            Override for page specific shutdown """
        for child in self.winfo_children():
            logger.debug("Destroying child: %s", child)
            child.destroy()
keep keep keep add
 bigfix: RuntimeWarning: More than 20 figures have been opened. 
lib/gui/display_page.py