Mintplex-Labs/anything-llm · error

A router with that name already exists.

Error message

A router with that name already exists.

What it means

Uniqueness violation surfaced by ModelRouter.create: a router row with the same name already exists (names are unique), so creation is rejected with 400 to prevent duplicate router names.

Source

Thrown at server/endpoints/modelRouter.js:64

        console.error(e);
        response.sendStatus(500);
      }
    }
  );

  app.post(
    "/model-routers/new",
    [validatedRequest, flexUserRoleValid([ROLES.admin])],
    async (request, response) => {
      try {
        const user = await userFromSession(request, response);
        const data = reqBody(request);
        const { router, error } = await ModelRouter.create(
          data,
          user?.id || null
        );

        if (error) return response.status(400).json({ router, error });
        await Telemetry.sendTelemetry("model_router_created");
        return response.status(200).json({ router });
      } catch (e) {
        console.error(e);
        response.sendStatus(500);
      }
    }
  );

  app.put(
    "/model-routers/:id",
    [validatedRequest, flexUserRoleValid([ROLES.admin])],
    async (request, response) => {
      try {
        const { id } = request.params;
        const data = reqBody(request);
        const { router, error } = await ModelRouter.update(Number(id), data);
        if (error) return response.status(400).json({ router, error });

View on GitHub (pinned to 3aec848f28)

Solutions

1. Choose a unique router name.
2. List existing routers to avoid name collisions.

When it happens

Trigger: Thrown at server/endpoints/modelRouter.js:64 when the library encounters an invalid state.

Common situations: Creating a router with a name already in use.

AI-assisted analysis of Mintplex-Labs/anything-llm@3aec848f28 (2026-08-18). Data as JSON: /api/errors/b26f8fd8117d1b0d. Report an issue: GitHub.