multica-ai/multica · error

close multipart writer: %w

Error message

close multipart writer: %w

What it means

Error "close multipart writer: %w" thrown in multica-ai/multica.

Source

Thrown at server/internal/cli/client.go:455

	var body bytes.Buffer
	writer := multipart.NewWriter(&body)

	part, err := writer.CreateFormFile("file", filepath.Base(filename))
	if err != nil {
		return "", fmt.Errorf("create form file: %w", err)
	}
	if _, err := part.Write(fileData); err != nil {
		return "", fmt.Errorf("write file data: %w", err)
	}

	if issueID != "" {
		if err := writer.WriteField("issue_id", issueID); err != nil {
			return "", fmt.Errorf("write issue_id field: %w", err)
		}
	}

	if err := writer.Close(); err != nil {
		return "", fmt.Errorf("close multipart writer: %w", err)
	}

	req, err := http.NewRequestWithContext(ctx, http.MethodPost, c.BaseURL+"/api/upload-file", &body)
	if err != nil {
		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)

View on GitHub (pinned to 2c0912b6ec)

Solutions

1. Retry the upload; check network stability.

When it happens

Trigger: Thrown at server/internal/cli/client.go:455 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/d5a7bea5595eb791. Report an issue: GitHub.