fixed zip file issue

app.py

@@ -2,6 +2,8 @@ import io
 import zipfile
 import json
 import time
+import tempfile
+import os
 from PIL import Image
 import gradio as gr
 
@@ -136,7 +138,14 @@ def gradio_ui(image, name, short_name, theme_color, background_color, tile_color
     if result is None:
         return None
     filename, zip_buf = result
-    return (filename, zip_buf)
+    
+    # Save ZIP to temporary file for Gradio download
+    tmp_dir = tempfile.mkdtemp()
+    filepath = os.path.join(tmp_dir, filename)
+    with open(filepath, "wb") as f:
+        f.write(zip_buf.read())
+    
+    return filepath
 
 demo = gr.Interface(
     fn=gradio_ui,
@@ -154,4 +163,4 @@ demo = gr.Interface(
 )
 
 if __name__ == "__main__":
-    demo.launch(debug=True, pwa=True)
+    demo.launch(server_host="0.0.0.0", server_port=7860, debug=True, pwa=True)