Minor fix

extensions/send_pictures/script.py

@@ -26,7 +26,7 @@ def caption_image(raw_image):
 def generate_chat_picture(picture, name1, name2):
     text = f'*{name1} sends {name2} a picture that contains the following: "{caption_image(picture)}"*'
     # lower the resolution of sent images for the chat, otherwise the log size gets out of control quickly with all the base64 values in visible history
-    image.thumbnail((300, 300))
+    picture.thumbnail((300, 300))
     buffer = BytesIO()
     picture.save(buffer, format="JPEG")
     img_str = base64.b64encode(buffer.getvalue()).decode('utf-8')