Update app.py

app.py

@@ -1507,20 +1507,36 @@ with gr.Blocks(title="Makerspace Inventory System", css=CUSTOM_CSS) as demo:
     
     # EVENT HANDLERS - Navigation
     def show_checkout():
-        return (gr.update(visible=False), gr.update(visible=True), 
-                gr.update(visible=False), gr.update(visible=False))
+        return [
+            gr.update(visible=False),  # main_menu
+            gr.update(visible=True),   # checkout_module
+            gr.update(visible=False),  # add_items_module
+            gr.update(visible=False)   # analysis_module
+        ]
     
     def show_add_items():
-        return (gr.update(visible=False), gr.update(visible=False),
-                gr.update(visible=True), gr.update(visible=False))
+        return [
+            gr.update(visible=False),  # main_menu
+            gr.update(visible=False),  # checkout_module
+            gr.update(visible=True),   # add_items_module
+            gr.update(visible=False)   # analysis_module
+        ]
     
     def show_analysis():
-        return (gr.update(visible=False), gr.update(visible=False),
-                gr.update(visible=False), gr.update(visible=True))
+        return [
+            gr.update(visible=False),  # main_menu
+            gr.update(visible=False),  # checkout_module
+            gr.update(visible=False),  # add_items_module
+            gr.update(visible=True)    # analysis_module
+        ]
     
     def return_to_menu():
-        return (gr.update(visible=True), gr.update(visible=False),
-                gr.update(visible=False), gr.update(visible=False))
+        return [
+            gr.update(visible=True),   # main_menu
+            gr.update(visible=False),  # checkout_module
+            gr.update(visible=False),  # add_items_module
+            gr.update(visible=False)   # analysis_module
+        ]
     
     checkout_btn.click(fn=show_checkout, outputs=[main_menu, checkout_module, add_items_module, analysis_module])
     add_items_btn.click(fn=show_add_items, outputs=[main_menu, checkout_module, add_items_module, analysis_module])