Update securecypher.space.py

securecypher.space.py

@@ -51,7 +51,7 @@ class SecureWaveformProcessor(nn.Module):
       self._plot_spectrogram(self.input_data[0], ax3, "Original Visual")
 
       ax4 = fig.add_subplot(gs[1, 1])
-      self._plot_spectrogram(processed_data[0], x4, "Processed Visual")
+      self._plot_spectrogram(processed_data[0], ax4, "Processed Visual")
 
       plt.tight_layout()
       return fig