multica-ai/multica · error

create Plugin artifact form file: %w

Error message

create Plugin artifact form file: %w

What it means

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

Source

Thrown at server/internal/cli/client.go:680

	if resp.StatusCode >= 400 {
		return newHTTPError(http.MethodPost, "/api/skills/import", resp)
	}
	if out == nil {
		return nil
	}
	return json.NewDecoder(resp.Body).Decode(out)
}

// UploadPrivatePlugin installs workspace-private Plugin archive bytes. The
// filename is transport metadata only; the Server derives source identity from
// validated manifest content and digests.
func (c *APIClient) UploadPrivatePlugin(ctx context.Context, path string, archive []byte, filename string, out any) error {
	var body bytes.Buffer
	writer := multipart.NewWriter(&body)
	part, err := writer.CreateFormFile("artifact", filepath.Base(filename))
	if err != nil {
		return fmt.Errorf("create Plugin artifact form file: %w", err)
	}
	if _, err := part.Write(archive); err != nil {
		return fmt.Errorf("write Plugin artifact: %w", err)
	}
	if err := writer.Close(); err != nil {
		return fmt.Errorf("close Plugin artifact upload: %w", err)
	}

	req, err := http.NewRequestWithContext(ctx, http.MethodPost, c.BaseURL+path, &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

View on GitHub (pinned to 2c0912b6ec)

Solutions

1. Check that the Plugin artifact is readable and retry.

When it happens

Trigger: Thrown at server/internal/cli/client.go:680 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/376decd560b90ebc. Report an issue: GitHub.