Update externalmod.py

externalmod.py

@@ -596,7 +596,7 @@ def save_image(image, savefile, modelname, prompt, nprompt, height=0, width=0, s
         if width > 0 and height > 0: metadata["resolution"] = f"{width} x {height}"
         metadata_str = json.dumps(metadata)
         info = PngImagePlugin.PngInfo()
-        info.add_text("iTXt", metadata_str)
+        info.add_text("", metadata_str)
         image.save(savefile, "PNG", pnginfo=info)
         return str(Path(savefile).resolve())
     except Exception as e: