Update app.py

app.py

@@ -38,6 +38,9 @@ df = pd.DataFrame({
     'dice_meaning': ['6-sided die', '6-sided die', '6-sided die', '6-sided die', '10-sided die', '20-sided die', '6-sided die', '6-sided die']
 })
 
+import os
+os.environ['DISPLAY'] = ':0'
+
 # Create the drop-down list box
 root = tk.Tk()
 root.title('Actor Role Playing Game')