Mintplex-Labs/anything-llm · error

Invalid message format. Expected an array of messages.

Error message

Invalid message format. Expected an array of messages.

What it means

Input guard on POST /workspace/:slug/suggested-messages: the messages body field is not an array, so the payload format is wrong for bulk-saving suggested messages and a 400 describing the expected array is returned.

Source

Thrown at server/endpoints/workspaces.js:587

        response.status(200).json({ success: true, suggestedMessages });
      } catch (error) {
        console.error("Error fetching suggested messages:", error);
        response
          .status(500)
          .json({ success: false, message: "Internal server error" });
      }
    }
  );

  app.post(
    "/workspace/:slug/suggested-messages",
    [validatedRequest, flexUserRoleValid([ROLES.admin, ROLES.manager])],
    async (request, response) => {
      try {
        const { messages = [] } = reqBody(request);
        const { slug } = request.params;
        if (!Array.isArray(messages)) {
          return response.status(400).json({
            success: false,
            message: "Invalid message format. Expected an array of messages.",
          });
        }

        await WorkspaceSuggestedMessages.saveAll(messages, slug);
        return response.status(200).json({
          success: true,
          message: "Suggested messages saved successfully.",
        });
      } catch (error) {
        console.error("Error processing the suggested messages:", error);
        response.status(500).json({
          success: true,
          message: "Error saving the suggested messages.",
        });
      }
    }

View on GitHub (pinned to 3aec848f28)

Solutions

1. Send suggested messages as a JSON array.
2. Each entry should be a message object matching the expected schema.

When it happens

Trigger: Thrown at server/endpoints/workspaces.js:587 when the library encounters an invalid state.

Common situations: Saving workspace suggested messages with a payload that is not an array.

AI-assisted analysis of Mintplex-Labs/anything-llm@3aec848f28 (2026-08-18). Data as JSON: /api/errors/e66345a4a283ea3c. Report an issue: GitHub.