fix gif upload bug

app.py

@@ -161,7 +161,7 @@ with gr.Blocks(title="Tarsier",theme=gvlabtheme,css="#chatbot {overflow:auto; he
                 with gr.Tab("Image", elem_id='image_tab'):
                     up_image = gr.Image(type="filepath", interactive=True, elem_id="image_upload", height=360)
                 with gr.Tab("GIF", elem_id='gif_tab'):
-                    up_gif = gr.File(type="filepath", file_count="single", file_types=["gif"], interactive=True, elem_id="gif_upload", height=360)
+                    up_gif = gr.File(type="filepath", file_count="single", file_types=[".gif"], interactive=True, elem_id="gif_upload", height=360)
             upload_button = gr.Button(value="Upload & Start Chat", interactive=True, variant="primary")
             clear = gr.Button("Restart")