multica-ai/multica · error

decode upload response: %w

Error message

decode upload response: %w

What it means

Error "decode upload response: %w" thrown in multica-ai/multica.

Source

Thrown at server/internal/cli/client.go:478

		return "", err
	}
	req.Header.Set("Content-Type", writer.FormDataContentType())
	c.setHeaders(req)

	resp, err := c.HTTPClient.Do(req)
	err = wrapTransport(req, err)
	if err != nil {
		return "", err
	}
	defer resp.Body.Close()

	if resp.StatusCode >= 400 {
		return "", newHTTPError(http.MethodPost, "/api/upload-file", resp)
	}

	var result map[string]any
	if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
		return "", fmt.Errorf("decode upload response: %w", err)
	}

	id, _ := result["id"].(string)
	if id == "" {
		return "", fmt.Errorf("upload response missing attachment id")
	}
	return id, nil
}

// UploadChatAttachment uploads a file via multipart form to /api/upload-file
// tagged with a chat task (task_id). The server binds the row to the assistant
// reply that task produces on completion. Returns the full AttachmentResponse
// (id + markdown_url) so the agent can embed the image inline in its reply.
func (c *APIClient) UploadChatAttachment(ctx context.Context, fileData []byte, filename, taskID string) (AttachmentResponse, error) {
	var body bytes.Buffer
	writer := multipart.NewWriter(&body)

	part, err := writer.CreateFormFile("file", filepath.Base(filename))

View on GitHub (pinned to 2c0912b6ec)

Solutions

1. Check server version compatibility; the upload response could not be decoded.

When it happens

Trigger: Thrown at server/internal/cli/client.go:478 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of multica-ai/multica@2c0912b6ec (2026-08-15). Data as JSON: /api/errors/56ea51833e16b51a. Report an issue: GitHub.