Mintplex-Labs/anything-llm · error

chatId is required

Error message

chatId is required

What it means

Input guard on POST /workspace/:slug/thread/fork: the request body lacks chatId, so the fork point (which chat to fork up to) is undefined and the request is rejected with 400 before any thread duplication.

Solutions

  1. Include the chatId in the request.
  2. Fetch the chat/thread list to obtain a valid ID.
Defensive patterns

Strategy: validation

When it happens

Trigger: Thrown at server/endpoints/workspaces.js:690 when the library encounters an invalid state.

Common situations: Calling a workspace chat endpoint without the required chatId.

AI-assisted analysis of Mintplex-Labs/anything-llm@3aec848f28 (2026-08-18). Data as JSON: /api/errors/105684dea61863fb. Report an issue: GitHub.

Appendix: source

Thrown at server/endpoints/workspaces.js:690

        response.end(buffer);
        return;
      } catch (error) {
        console.error("Error processing the TTS request:", error);
        response.status(500).json({ message: "TTS could not be completed" });
      }
    }
  );

  app.post(
    "/workspace/:slug/thread/fork",
    [validatedRequest, flexUserRoleValid([ROLES.all]), validWorkspaceSlug],
    async (request, response) => {
      try {
        const user = await userFromSession(request, response);
        const workspace = response.locals.workspace;
        const { chatId, threadSlug } = reqBody(request);
        if (!chatId)
          return response.status(400).json({ message: "chatId is required" });

        // Get threadId we are branching from if that request body is sent
        // and is a valid thread slug.
        const threadId = !!threadSlug
          ? (
              await WorkspaceThread.get({
                slug: String(threadSlug),
                workspace_id: workspace.id,
              })
            )?.id ?? null
          : null;
        const chatsToFork = await WorkspaceChats.where(
          {
            workspaceId: workspace.id,
            user_id: user?.id,
            include: true, // only duplicate visible chats
            thread_id: threadId,
            api_session_id: null, // Do not include API session chats.

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