Update app.py

app.py

@@ -45,7 +45,32 @@ def start_exam(exam_choice, start_question, audio_enabled):
     if start_question >= len(selected_questions):
         start_question = 0  # Default to the first question if the input exceeds available questions
 
-    question, options, audio_path = display_question(start_question -1 if start_question > 0 else 0, audio_enabled, selected_questions) # Corrected index here to be 0-based
+    question_list = select_exam_vce(exam_choice) # Get the question list here
+    if not question_list: # handle case where select_exam_vce returns None or empty list
+        return (
+            gr.update(visible=True),  # Show title
+            gr.update(value="**Error: No Questions Found for this Exam**", visible=True), # Update description to error message
+            gr.update(visible=True), # Show exam_selector
+            gr.update(visible=True), # Show start_button
+            gr.update(visible=True),  # Show the audio_checkbox
+            gr.update(visible=True),  # Show start_question_slider
+            # Hide quiz elements
+            gr.update(visible=False),  # Hide question_text
+            "",  # Question to display
+            gr.update(choices=[], visible=False),  # Hide Radio choices
+            gr.update(visible=False),  # Hide answer_button
+            gr.update(visible=False),  # Hide next_button
+            gr.update(visible=False),  # Hide prev_button
+            gr.update(visible=False),  # Hide home_button
+            0, "",  # Update the question state
+            None, # Provide the audio_path
+            gr.update(visible=False),  # Hide explain_button
+            gr.update(visible=False),
+            None # None for audio stop
+        )
+
+
+    question, options, audio_path = display_question(start_question -1 if start_question > 0 else 0, audio_enabled, selected_questions) # Corrected index here to be 0-based, using global selected_questions
 
     return (
         # Hide start screen elements