Gradio fix

app.py

@@ -488,7 +488,7 @@ if __name__ == "__main__":
             )
             with gr.Row():
                 with gr.Column():
-                    input_image = gr.Image(source="upload", type="pil")
+                    input_image = gr.Image(sources=["upload"], type="pil")
                     thing_category_names_string = gr.Textbox(
                         label="Thing categories (i.e. categories with instances), comma-separated",
                         placeholder="E.g. car, bus, person",