+ fix fatal error by @weckyy

gui/gui.py

@@ -145,7 +145,7 @@ class Gui:
                             )
                             output_path = values['-OUTPUT FOLDER-']
                             nassi(file_path, output_path, gui=self,
-                                  font_filepath=str(font_filepath))
+                                  font_filepath=font_filepath)
 
                             fnames = output(values)
                             window['-OUTPUT FILE LIST-'].update(fnames)

gui/utils.py

@@ -4,9 +4,14 @@ import os
 from interpreter.NassiShneidermann import NassiShneidermanDiagram
 from draw.Iinstruction import *
 
-def nassi(filepath:str, output_path: str, gui, font_filepath: str=None):
+def nassi(filepath:str, output_path: str, gui, font_filepath=None):
     NSD = NassiShneidermanDiagram(gui.debug_mode)
-    if font_filepath is not None and font_filepath != "":
+    #if font_filepath is None:
+    #    pass
+    #else:
+    #if font_filepath is not None or font_filepath != "":
+    if font_filepath != None:
+        print(font_filepath)
         NSD.set_font(font_filepath)
     NSD.load_from_file(filepath)
     NSD.convert_to_image(output_path, 500)