Update app.py

app.py

@@ -46,7 +46,7 @@ def create_collage(images):
             last_image.paste(img, (pos_x, pos_y))
         #Guardar el collage
         with tempfile.NamedTemporaryFile(suffix='.png') as temp:
-            result.save(temp.name)
+            last_image.save(temp.name)
             zip.write(temp.name)
             temp.flush()
             temp.close()
@@ -58,51 +58,4 @@ gr.Interface(fn=create_collage,
              inputs=["files"],
              outputs="files",
              title="Convert images to collage" 
-            ).launch();
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+            ).launch();