Fix reading of old conversations (#7309)

openhands/storage/conversation/file_conversation_store.py

@@ -86,7 +86,7 @@ class FileConversationStore(ConversationStore):
                 conversations.append(await self.get_metadata(conversation_id))
             except Exception:
                 logger.warning(
-                    f'Could not load conversation metadata: {conversation_id}',
+                    f'Could not load conversation metadata: {conversation_id}'
                 )
         conversations.sort(key=_sort_key, reverse=True)
         conversations = conversations[start:end]

openhands/storage/data_models/conversation_metadata.py

@@ -5,9 +5,9 @@ from datetime import datetime, timezone
 @dataclass
 class ConversationMetadata:
     conversation_id: str
-    user_id: str | None
     github_user_id: str | None
     selected_repository: str | None
+    user_id: str | None = None
     selected_branch: str | None = None
     title: str | None = None
     last_updated_at: datetime | None = None