Issues During Migration

The export and transfer phases are the most resource-intensive. Most failures at this stage are triggered by server-side restrictions, you can usually resolve these issues by optimizing the WPvivid Advanced Settings or by increasing your server’s disk space and timeout thresholds.

Export timeout / Too many resumption attempts

• Cause
  The web server has insufficient CPU, RAM, or execution time to process a large website, especially when zipping many files at once.
• Solution
  Adjust WPvivid settings as suggested in this doc.

[error]PCLZIP_ERR_MISSING_FILE (-4) : Missing archive file

• Cause
  The available web server space is insufficient for creating more backup files, or your web server restricts a high volume of read/write operations in a short interval.
• Solution
  Check disk space of the web hosting account and ensure that the available disk space is at least twice the website size.

[error]Backup ends with an error PCLZIP_ERR_BAD_FORMAT (-10) : gzip temporary file

• Cause
  The server forcefully terminated the process before completion, leaving a corrupted Gzip file (usually minimum 18 bytes error).
• Solution
  Go to WPvivid Plugin → Advanced Settings → Select Custom (Advanced) as the backup performance mode → Change the value of Split a backup every this size to 50MB or 100MB. If the error persists, consider upgrading your hosting plan to one with higher resource limits.

cURL error 51: SSL: no alternative certificate subject name matches target host name

• Cause
  The target server presented an SSL certificate that is not valid for the hostname you are using to access it.
• Solution
  We recommend using the manual transfer method to move your site files.

Finish upload to send_to_site error: cURL error 28: Operation timed out

• Cause
  The target site has strict limits on receiving large data chunks, causing the connection to drop during the transfer.
• Solution
  Go to WPvivid Plugin → Advanced Settings → Select Custom (Advanced) as the backup performance mode → Change Chunk Size to 512 or 256 KB. If the error persists, we recommend following the manual transfer method to move your site files.

cURL error 60: SSL certificate problem: unable to get local issuer certificate

• Cause
  The local server environment lacks a valid root certificate bundle to verify SSL connections during the transfer.
• Solution
  Download the latest cacert.pem from curl.haxx.se → update your php.ini file with the line: curl.cainfo="/path/to/cacert.pem".

Error with AffiliateWP / wp_affiliate_wp_campaigns

• Cause
  The table wp_affiliate_wp_campaigns is a database “view” and cannot be exported like a standard physical table.
• Solution
  Manually uncheck the wp_affiliate_wp_campaigns table in the database selection list before starting the export.

Export cannot be canceled

• Cause
  The WP-Cron system on your website is not executing properly, preventing the cancel task from being properly executed.
• Solution
  Check your website cron system and make sure it is working properly. You may need to define DISABLE_WP_CRON as false or set up a real system cron job in cPanel.

Issues After Migration

The destination website is not working as expected after migration is complete.

Unable to log in or “Website is inaccessible”

• Cause
  A prefix mismatch between the database options table and your wp-config.php, often caused by security or SSL plugins.
• Solution
  Use phpMyAdmin to ensure the prefix_user_roles and prefix_capabilities rows in the options table match your current database prefix (e.g., wp_).

Only the homepage is accessible (404 on other pages)

• Cause
  The .htaccess file or rewrite rules did not refresh to accommodate the new domain or server path.
• Solution
  Navigate to WordPress Settings of destination site → Permalinks and click Save Changes twice to flush and regenerate the rewrite rules.

Missing background images (Elementor / Oxygen)

• Cause
  Page builders cache CSS paths that still point to the old source URL after migration.
• Solution
  If you use Elementor page builder → Go to Elementor > Tools > General > Clear Files & Data → Save Changes. If you use Oxygen page builder → Use their built-in Import/Export tool to resign shortcodes and refresh styles.