The error 'Failed to construct URL: Invalid base URL' occurs in the icon loading process, likely in the web component's logic. Search for 'new URL(' in the source code (e.g., `src/` or `dist/`) to find where the base is passed. Check if the base is derived from a potentially undefined or invalid source, such as `document.baseURI` or `location.href`. Consider adding a fallback or validation to prevent this error when the base is invalid.