jquery.blockui.js243 Uncaught TypeError Cannot read properties of undefined (reading 'parentNode')

To help you troubleshoot this issue, here are some suggestions:

1. Check if the `jquery.blockui.js` library is being loaded correctly in your HTML file before any other scripts that depend on it, and make sure you have included the jQuery library as a dependency.

2. Check if there are any conflicts with other libraries or plugins in your project that might be interfering with `jquery.blockui`. Try disabling them one by one to see if the issue disappears.

3. Check your console for any other error messages that might provide more context about what's causing this specific error, such as missing elements or incorrect selectors in the HTML.

4. Make sure you have read and followed any documentation that comes with `jquery.blockui` regarding setup, usage, and configuration options to ensure everything is configured correctly for your use case.

5. If you're still unable to resolve the issue after trying these suggestions, consider reaching out to the `jquery.blockui` community or support team for further assistance.