Update app.py

app.py

@@ -318,7 +318,15 @@ def navigate_lines(button):
         line_index = min(line_index + 1, len(lines) - 1)
     elif button == 'previous':
         line_index = max(line_index - 1, 0)
-    return lines[line_index].strip()
+    return lines[line_index].strip() if lines else "No lines found."
+
+# Function to handle file upload
+def upload_file(file):
+    if file is not None:
+        file_path = file.name
+        return read_lines_from_file(file_path)
+    else:
+        return "No file uploaded."
 
 # Gradio interface function
 def audio_capture_interface():
@@ -331,18 +339,10 @@ def audio_capture_interface():
         with gr.Row():
             status_output = gr.Textbox(label="Status", placeholder="Status will appear here")
         with gr.Row():
-            gr.Button("Previous").click(lambda: navigate_lines('previous'), outputs=text_display)
-            gr.Button("Forward").click(lambda: navigate_lines('forward'), outputs=text_display)
+            gr.Button("Previous").click(lambda: navigate_lines('previous'), None, text_display)
+            gr.Button("Forward").click(lambda: navigate_lines('forward'), None, text_display)
             gr.Button("Submit").click(process_audio, inputs=audio_input, outputs=status_output)
 
-        # Handle file upload
-        def upload_file(file):
-            if file:
-                file_path = file.name
-                text_display.update(read_lines_from_file(file_path))
-            else:
-                text_display.update("No file uploaded.")
-
         file_upload.upload(upload_file, outputs=text_display)
 
     return iface
@@ -350,4 +350,3 @@ def audio_capture_interface():
 # Launch the interface
 iface = audio_capture_interface()
 iface.launch()
-