Update app.py

app.py

@@ -54,8 +54,8 @@ def create_collage(images, image_size):
     return "collages.zip"
 
 
-gr.Interface( create_collage,
-             [gr.Radio(["512", "768"]),"files"],
+gr.Interface( fn=create_collage,
+             inputs=["files", gr.Radio(["512", "768"])],
              outputs="files",
              title="Convert images to collage" 
             ).launch();