This error usually occurs when the XML file used for importing demo content is either corrupted, improperly formatted, or inaccessible. The XML file is crucial as it contains the data that needs to be imported (e.g., posts, pages, menus, etc.).

1. “XML” Error:

Common Causes:

• Corrupt XML File: The file might be corrupted during the download or upload process.
• Incorrect File Path: The importer might not be able to locate the XML file if the path is incorrect.
• Server Issues: Sometimes, server settings or limitations can prevent the XML file from being processed correctly.
• Incomplete Download: If the demo data wasn’t fully downloaded, it can lead to an incomplete or corrupted XML file.

How to Fix:

• Redownload the Demo File: Download the demo content again from the source to ensure it’s not corrupted.
• Check File Permissions: Ensure that the XML file has the correct file permissions, allowing it to be read by the server.
• Increase PHP Limits: Sometimes, increasing the PHP limits (such as max_execution_time, memory_limit, and upload_max_filesize) in your hosting settings can help process larger XML files.
• Contact Support: If the issue persists, contact the theme or plugin support for assistance, as they may need to provide a clean XML file or check for compatibility issues.
  
  

2. “Does Not Exist” Error:

This error usually indicates that a required file, resource, or dependency needed for the demo import is missing or cannot be found.

Common Causes:

• Missing Files: The demo content may refer to files or resources that do not exist in the specified location.
• Incorrect Paths: The paths defined in the import configuration may be incorrect or outdated.
• Deleted or Moved Files: Files may have been deleted or moved from the server or hosting environment.
• Plugin Dependencies: Some demos require specific plugins to be installed. If these plugins are not active, the content or components might not exist.
  
  

How to Fix:

• Ensure All Required Plugins Are Installed: Check that all necessary plugins required by the demo are installed and activated.
• Verify File Locations: Double-check the paths or URLs referenced in the demo import configuration to ensure they point to the correct files.
• Reinstall the Demo Content: Try to uninstall and then reinstall the demo content to see if the error resolves itself.
• Check Server Paths: If you have moved the site from one server to another, ensure the paths are updated accordingly.

• Clear Cache: Clear your WordPress and browser cache to ensure you’re not seeing a cached error.
• Check for Theme Updates: Ensure that your Xtra WordPress theme and its associated demo importer tool are up to date, as updates often include fixes for known issues.
• Review Server Logs: Check your server’s error logs for more specific details about why the import is failing, which can provide further insight into the issue.

By addressing these potential issues, you should be able to resolve the “XML” error and the “does not exist” error in your demo importer.

When you try to import a demo and faced following error:

 

• XML file and cURL error 18, transfer closed with outstanding read data remaining, Please contact with your server/hosting support and ask them to fix cURL issue.

First please make sure your server PHP cURL and allow_url_fopen settings both are ON and works good. Then try again to import a demo. If still have the same problem, Try to restart your server PHP and then try again.

 

If still facing the same problem it seems your server blocking WP function wp_remote_get() to get and read files. Or your server do not allow the WordPress function from downloading and extracting demo data ZIP file.