fix png?

txt2panoimg/text_to_360panorama_image_pipeline.py

@@ -207,4 +207,7 @@ class Text2360PanoramaImagePipeline(DiffusionPipeline):
                 ).images[0]
             print('finished')
 
+        # Ensure output is in PNG format
+        if isinstance(output_img, Image.Image):
+            output_img = output_img.convert('RGB')
         return output_img