diff --git a/maubot_llmplus/aibot.py b/maubot_llmplus/aibot.py
index 917136e..22e70e9 100644
--- a/maubot_llmplus/aibot.py
+++ b/maubot_llmplus/aibot.py
@@ -167,16 +167,19 @@ class AiBotPlugin(AbsExtraConfigPlugin):
             async for chunk in platform.create_chat_completion_stream(self, evt):
                 accumulated += chunk
                 if len(accumulated) - last_edit_len >= EDIT_THRESHOLD:
-                    display = accumulated + " ▌"
-                    new_content = TextMessageEventContent(
-                        msgtype=MessageType.TEXT,
-                        body=display,
-                        format=Format.HTML,
-                        formatted_body=markdown.render(display)
-                    )
-                    new_content.set_edit(response_event_id)
-                    await self.client.send_message(evt.room_id, new_content)
-                    last_edit_len = len(accumulated)
+                    try:
+                        display = accumulated + " ▌"
+                        new_content = TextMessageEventContent(
+                            msgtype=MessageType.TEXT,
+                            body=display,
+                            format=Format.HTML,
+                            formatted_body=markdown.render(display)
+                        )
+                        new_content.set_edit(response_event_id)
+                        await self.client.send_message(evt.room_id, new_content)
+                        last_edit_len = len(accumulated)
+                    except Exception as edit_err:
+                        self.log.warning(f"Streaming mid-edit failed (skipping): {edit_err}")
         except Exception as e:
             self.log.exception(f"Streaming error: {e}")
             if not accumulated: