Update app.py

app.py

@@ -194,6 +194,6 @@ with gr.Blocks() as cluster:
             dataframe2=gr.Dataframe()
     
     btn.click(handle_click, inputs=[file, sheet_dropdown], outputs=[out1, out2, var, dataframe1, dataframe2])
-    file.observe(update_sheets, names=["data"])
+    file.change(update_sheets, inputs=file, outputs=None) 
     #btn.click(generate_report,inputs=[file],outputs=[out1,out2,var,dataframe1,dataframe2])
 cluster.launch()