RocketChat/Rocket.Chat · error · Error

Discussion not found

Error message

Discussion not found

What it means

Thrown by getDiscussionByID when findDiscussionByID returns undefined. findDiscussionByID searches the Rooms store for a record whose _id matches the given discussion room ID (drid) AND that has a prid (parent room ID) — i.e., it confirms the ID refers to a discussion thread spawned from a parent channel/group. If no such room exists in the local cache, it throws.

Source

Thrown at apps/meteor/client/lib/chats/data.ts:287

		}

		return room;
	};

	const isSubscribedToRoom = async (): Promise<boolean> => !!Subscriptions.state.find((record) => record.rid === rid);

	const joinRoom = async (): Promise<void> => {
		await sdk.rest.post('/v1/rooms.join', { roomId: rid });
	};

	const findDiscussionByID = async (drid: IRoom['_id']): Promise<IRoom | undefined> =>
		Rooms.state.find((record) => Boolean(record._id === drid && record.prid));

	const getDiscussionByID = async (drid: IRoom['_id']): Promise<IRoom> => {
		const discussion = await findDiscussionByID(drid);

		if (!discussion) {
			throw new Error('Discussion not found');
		}

		return discussion;
	};

	const createStrictGetter = <TFind extends (...args: any[]) => Promise<any>>(
		find: TFind,
		errorMessage: string,
	): ((...args: Parameters<TFind>) => Promise<Exclude<Awaited<ReturnType<TFind>>, undefined>>) => {
		return async (...args) => {
			const result = await find(...args);

			if (!result) {
				throw new Error(errorMessage);
			}

			return result;
		};

View on GitHub (pinned to f9d3ec372b)

Solutions

1. Use findDiscussionByID() (returns undefined) instead of getDiscussionByID and handle the absence.
2. Verify the drid corresponds to a room with a prid before calling — check the Rooms store for the prid field.
3. Fetch the discussion room data from the server if not in cache, then retry.
4. Catch the error and show a 'discussion not available' message to the user.

Example fix

// before
const discussion = await getDiscussionByID(drid);
// after
const discussion = await findDiscussionByID(drid);
if (!discussion) {
  // fetch from server or show fallback
  return;
}

const discussion = await findDiscussionByID(drid);
if (!discussion) {
  // discussion not in cache, fetch or show fallback
  return;
}
// proceed with discussion

const isDiscussion = (room: IRoom | undefined): room is IRoom =>
  Boolean(room && room.prid);

try {
  const discussion = await getDiscussionByID(drid);
} catch (e) {
  if (e instanceof Error && e.message === 'Discussion not found') {
    showDiscussionUnavailable();
    return;
  }
  throw e;
}

When it happens

Trigger: The discussion room ID does not exist in the Rooms store. The room exists but is not a discussion (no prid field). The discussion was deleted. The discussion data has not been loaded yet (store not hydrated).

Common situations: Navigating to a discussion from a stale link. Discussion was archived by an admin. Client started fresh and discussions list hasn't synced. Incorrect drid passed (typo or wrong reference).

Related errors

• Room not found
• Subscription not found
• room-not-found
• error-pinning-message
• There must be a parent room to create a discussion.

AI-assisted analysis of RocketChat/Rocket.Chat@f9d3ec372b (2026-08-12). Data as JSON: /api/errors/7566e3bb15d3e7e0. Report an issue: GitHub.