multica-ai/multica · error

create form file: %w

Error message

create form file: %w

What it means

Error "create form file: %w" thrown in multica-ai/multica.

Source

Thrown at server/internal/cli/client.go:442

	DownloadURL string `json:"download_url"`
	// MarkdownURL is the durable, persistable URL to embed in markdown bodies
	// (chat replies, comments). Unlike DownloadURL it never carries a TTL.
	MarkdownURL string `json:"markdown_url"`
	Filename    string `json:"filename"`
	ContentType string `json:"content_type"`
	SizeBytes   int64  `json:"size_bytes"`
	CreatedAt   string `json:"created_at"`
}

// UploadFile uploads a file via multipart form to /api/upload-file.
// It returns the attachment ID from the server response.
func (c *APIClient) UploadFile(ctx context.Context, fileData []byte, filename string, issueID string) (string, error) {
	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

View on GitHub (pinned to 2c0912b6ec)

Solutions

1. Check that the file to upload is readable and retry.

When it happens

Trigger: Thrown at server/internal/cli/client.go:442 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/0921604e30986cfd. Report an issue: GitHub.