better handling

app.py

@@ -96,10 +96,34 @@ with gr.Blocks(title="Time series anomaly detection with Chronos2") as demo:
             download_output = gr.File(label="Download Anomaly Detection Results (CSV)", visible=False, interactive=False)
             errorHandler = gr.Markdown(label="Error Messages", visible=False)
 
+
+        processing_msg = gr.Markdown("⏳ Processing file, please wait...", visible=False)
+        detect_button.click(
+            lambda : gr.update(visible=False, value=""),
+            inputs=None,
+            outputs=[plot_output, download_output, errorHandler]
+        )
+
+        detect_button.click(
+            gr.update(visible=True),
+            inputs=None,
+            outputs=processing_msg
+        )
+
         detect_button.click(
-            lambda file, timestamp_question, timestamp_column: dataProcessing(file, timestamp_column if timestamp_question == "Yes" else None),
+            lambda file, timestamp_question, timestamp_column:
+                dataProcessing(
+                    file.name if file is not None else None,
+                    timestamp_column if timestamp_question == "Yes" else None
+                ),
             inputs=[file_input, timestamp_question, timestamp_column_input],
-            outputs=[plot_output, download_output, errorHandler],
+            outputs=[plot_output, download_output, errorHandler]
+        )
+
+        detect_button.click(
+            gr.update(visible=False),
+            inputs=None,
+            outputs=processing_msg
         )