Update app.py

app.py

@@ -62,7 +62,7 @@ with gr.Blocks(css="#chatbot{height:300px} .overflow-y-auto{height:500px}") as d
                 placeholder="Enter text and press enter, or upload an image",    
             ).style(container=False)
         with gr.Column(scale=0.15, min_width=0):
-            btn = gr.UploadButton(":file_folder:", file_types=["image", "video", "audio"])
+            btn = gr.UploadButton("📁", file_types=["image", "video", "audio"])
             
     txt_msg = txt.submit(answer, [txt, state], chatbot, state, queue=False).then(       
         lambda x: chatbot.add(*x),